# \#bug

**URL:** https://discourse.slicer.org/tag/bug/18.md

[Latest](https://discourse.slicer.org/latest.md) · [Categories](https://discourse.slicer.org/categories.md) · [Tags](https://discourse.slicer.org/tags.md)

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## [Recurring bug on Shoulder tracking](https://discourse.slicer.org/t/recurring-bug-on-shoulder-tracking/47656)

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**Author:** [@AlonsoFigueroa](https://discourse.slicer.org/u/AlonsoFigueroa)\
**Replies:** 12\
**Last updated:** [August 27, 2026, 4:13pm UTC](https://discourse.slicer.org/t/recurring-bug-on-shoulder-tracking/47656 "2026-08-27T16:13:35Z")

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Hello SAM team, We are encountering an issue while tracking a scapula in Autoscoper during an arm elevation task. For one participant, Autoscoper consistently crashes when saving frames within specific ranges of motion…

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## [Level tracing tool is either an amnesiac or thinks I'm too stupid to segment on my own](https://discourse.slicer.org/t/level-tracing-tool-is-either-an-amnesiac-or-thinks-im-too-stupid-to-segment-on-my-own/47814)

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**Author:** [@Chelonian](https://discourse.slicer.org/u/Chelonian)\
**Replies:** 2\
**Last updated:** [August 8, 2026, 8:13am UTC](https://discourse.slicer.org/t/level-tracing-tool-is-either-an-amnesiac-or-thinks-im-too-stupid-to-segment-on-my-own/47814 "2026-08-08T08:13:36Z")

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Operating system: Windows 11 Pro Slicer version: 5.12.0 Expected behavior: Each level I trace using the “level tracing” tool is saved and placed into the 3d model of that segment Actual behavior: random sections (cons…

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## [GUI panels from Slicer 5.12.0 shows over other software on Windows 11](https://discourse.slicer.org/t/gui-panels-from-slicer-5-12-0-shows-over-other-software-on-windows-11/47472)

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**Author:** [@Esteban\_Barreiro](https://discourse.slicer.org/u/Esteban_Barreiro)\
**Replies:** 4\
**Last updated:** [July 2, 2026, 7:23pm UTC](https://discourse.slicer.org/t/gui-panels-from-slicer-5-12-0-shows-over-other-software-on-windows-11/47472 "2026-07-02T19:23:38Z")

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Hello. I’m experiencing some GUI glitches in the Slicer 5.12.0 version. Some of the menus, from the Red, Green, Yellow viewers stay visible over every other software. I’m on Windows 11. In the attached image you can s…

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## [Screen Capture and Screenshot export issues](https://discourse.slicer.org/t/screen-capture-and-screenshot-export-issues/46621)

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**Author:** [@Atticus](https://discourse.slicer.org/u/Atticus)\
**Replies:** 7\
**Last updated:** [April 2, 2026, 4:49pm UTC](https://discourse.slicer.org/t/screen-capture-and-screenshot-export-issues/46621 "2026-04-02T16:49:51Z")

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Hi community! I am trying to export images from 3D renders (transparent PNGs). Currently running 3DSlicer 5.10 on Win11. Issue 1: When using the Screen Capture module, if the default output file name is changed, the e…

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## [Folder visibility confusing](https://discourse.slicer.org/t/folder-visibility-confusing/23753)

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**Author:** [@fbordignon](https://discourse.slicer.org/u/fbordignon)\
**Replies:** 6\
**Last updated:** [February 25, 2026, 2:26pm UTC](https://discourse.slicer.org/t/folder-visibility-confusing/23753 "2026-02-25T14:26:13Z")

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The eye icon is both loved and hated by our users, but I believe there is a confusing behavior for the folder eye icon. When I close the folder’s eye and have both 2D and 3D renderings, only the 3D hides: To confu…

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## [Slicer 5.10 qMRMLSubjectHierarchyComboBox turned to 'None' but no issue with 5.8.1](https://discourse.slicer.org/t/slicer-5-10-qmrmlsubjecthierarchycombobox-turned-to-none-but-no-issue-with-5-8-1/45203)

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**Author:** [@chz31](https://discourse.slicer.org/u/chz31)\
**Replies:** 8\
**Last updated:** [January 28, 2026, 3:00pm UTC](https://discourse.slicer.org/t/slicer-5-10-qmrmlsubjecthierarchycombobox-turned-to-none-but-no-issue-with-5-8-1/45203 "2026-01-28T15:00:19Z")

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Dear all, In a new Extension I recently made SlicerOrbitSurgerySim (installable in Extension Manager in Slicer 5.10), when I run a function called onInitialRegistrationPushButton from the plateRegistration module, the n…

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## [Additional module path disappears after restart](https://discourse.slicer.org/t/additional-module-path-disappears-after-restart/45357)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 11\
**Last updated:** [December 10, 2025, 12:02am UTC](https://discourse.slicer.org/t/additional-module-path-disappears-after-restart/45357 "2025-12-10T00:02:25Z")

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I am adding a new module directory via application settings, but after restart, the added directory disappears. There are no errors relevant to this during application startup. I observe this with both 5.10 and nightly. …

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## [Please advise - Slicer wiped older dicoms/segmentations when editing other files ](https://discourse.slicer.org/t/please-advise-slicer-wiped-older-dicoms-segmentations-when-editing-other-files/45349)

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**Author:** [@Sus\_Mu](https://discourse.slicer.org/u/Sus_Mu)\
**Replies:** 3\
**Last updated:** [December 5, 2025, 12:05am UTC](https://discourse.slicer.org/t/please-advise-slicer-wiped-older-dicoms-segmentations-when-editing-other-files/45349 "2025-12-05T00:05:52Z")

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I am working on a project with batches of segmentations. Batch A (prepared in October) and Batch B (prepared in November) were saved on my computer, without meaningful backup through TimeMachine or iCloud. I also have a…

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## [Cloning a composite transform yields incorrect result](https://discourse.slicer.org/t/cloning-a-composite-transform-yields-incorrect-result/44654)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 6\
**Last updated:** [October 14, 2025, 3:03am UTC](https://discourse.slicer.org/t/cloning-a-composite-transform-yields-incorrect-result/44654 "2025-10-14T03:03:40Z")

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A composite transform node, such as those created by an ANTs QuickSyN registration, is not cloned correctly by the subject hierarchy node. I am using Slicer 5.8.1 on Windows 11. I have been working on taking apart and r…

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## [Transformed ROI shows up as changed in Save dialog directly after opening an mrml scene](https://discourse.slicer.org/t/transformed-roi-shows-up-as-changed-in-save-dialog-directly-after-opening-an-mrml-scene/43384)

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**Author:** [@MMMPPPMMM](https://discourse.slicer.org/u/MMMPPPMMM)\
**Replies:** 3\
**Last updated:** [July 27, 2025, 10:13am UTC](https://discourse.slicer.org/t/transformed-roi-shows-up-as-changed-in-save-dialog-directly-after-opening-an-mrml-scene/43384 "2025-07-27T10:13:41Z")

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Hello I think it is a bug that a transformed ROI shows up as changed in Save dialog directly after opening an MRML scene? Find an example here: Download Transformed\_ROI\_Test.zip | LimeWire Tested with Slicer 5.8.1 …

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## [GPU and CPU rendering on MacBookPro M2 ProMax](https://discourse.slicer.org/t/gpu-and-cpu-rendering-on-macbookpro-m2-promax/29152)

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**Author:** [@Adam\_Summers](https://discourse.slicer.org/u/Adam_Summers)\
**Replies:** 7\
**Last updated:** [May 20, 2025, 12:50am UTC](https://discourse.slicer.org/t/gpu-and-cpu-rendering-on-macbookpro-m2-promax/29152 "2025-05-20T00:50:26Z")

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I have the latest Apple MacBook with Apple silicon, 96GB of RAM running Ventura. I am using the most recent build of Slicer for Mac from 2023-4-25. My fairly large data sets are rendering well, though slowly, using the C…

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## [Error when dowloading ScriptEditor](https://discourse.slicer.org/t/error-when-dowloading-scripteditor/41214)

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**Author:** [@Matteboo](https://discourse.slicer.org/u/Matteboo)\
**Replies:** 1\
**Last updated:** [January 22, 2025, 4:55pm UTC](https://discourse.slicer.org/t/error-when-dowloading-scripteditor/41214 "2025-01-22T16:55:26Z")

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Hello, I get an error when downloading the script editor. Installing other extension seems fine. I’m using window 11 and slicer 5.6.2. I get the error “Could not find an extension with id = 66f3fb60e6b8965d1e48570c” …

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## [Possible regression in events triggered by plane and ROI markups](https://discourse.slicer.org/t/possible-regression-in-events-triggered-by-plane-and-roi-markups/40474)

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**Author:** [@rfenioux](https://discourse.slicer.org/u/rfenioux)\
**Replies:** 5\
**Last updated:** [December 11, 2024, 2:31pm UTC](https://discourse.slicer.org/t/possible-regression-in-events-triggered-by-plane-and-roi-markups/40474 "2024-12-11T14:31:14Z")

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Hi all, I am encountering an inconsistent behavior regarding the handling of events for plane and ROI markups in the latest preview version of Slicer, comparing to the stable release (slicer 5.6.2) It seems that in the…

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## [Volume rendering file shows up as changed in Save dialog directly after opening an mrml scene](https://discourse.slicer.org/t/volume-rendering-file-shows-up-as-changed-in-save-dialog-directly-after-opening-an-mrml-scene/39979)

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**Author:** [@MMMPPPMMM](https://discourse.slicer.org/u/MMMPPPMMM)\
**Replies:** 3\
**Last updated:** [November 4, 2024, 10:49pm UTC](https://discourse.slicer.org/t/volume-rendering-file-shows-up-as-changed-in-save-dialog-directly-after-opening-an-mrml-scene/39979 "2024-11-04T22:49:11Z")

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Hello It seems to me like a bug that the \*.vp volume rendering file shows up as changed in Save dialog directly after opening an MRML scene? Find an example here: Upload Files | Free File Upload and Transfer Up To 10 G…

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## [Markup control point coordinate values are not automatically updated when switching between World and Local](https://discourse.slicer.org/t/markup-control-point-coordinate-values-are-not-automatically-updated-when-switching-between-world-and-local/39982)

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**Author:** [@MMMPPPMMM](https://discourse.slicer.org/u/MMMPPPMMM)\
**Replies:** 1\
**Last updated:** [November 1, 2024, 3:02pm UTC](https://discourse.slicer.org/t/markup-control-point-coordinate-values-are-not-automatically-updated-when-switching-between-world-and-local/39982 "2024-11-01T15:02:57Z")

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Hello When I switch between “World” and “Local” in the “Coordinates:” drop down list of the Control Points section of the Markups module, the coordinates are not automatically updated. As workaround one can use the “Pr…

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## [Windows 11 WSL2 floating View Widgets bug](https://discourse.slicer.org/t/windows-11-wsl2-floating-view-widgets-bug/29608)

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**Author:** [@Thibault\_Pelletier](https://discourse.slicer.org/u/Thibault_Pelletier)\
**Replies:** 6\
**Last updated:** [July 26, 2024, 6:08am UTC](https://discourse.slicer.org/t/windows-11-wsl2-floating-view-widgets-bug/29608 "2024-07-26T06:08:30Z")

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Hi everyone, I recently wanted to test an extension build on Linux and used Windows 11 WSL2 for this with a Slicer build from scratch on the main branch. Everything builds smoothly (which is really great) and GUI suppo…

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## [Windows: Unable to import DICOM files that are in a OneDrive-backed up folder](https://discourse.slicer.org/t/windows-unable-to-import-dicom-files-that-are-in-a-onedrive-backed-up-folder/36153)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 8\
**Last updated:** [May 15, 2024, 5:15pm UTC](https://discourse.slicer.org/t/windows-unable-to-import-dicom-files-that-are-in-a-onedrive-backed-up-folder/36153 "2024-05-15T17:15:46Z")

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TL;DR: on Windows, do not use folders that are backed up by Microsoft OneDrive for DICOM images that you want to import into Slicer DICOMBrowser! @vkt1414 and I have been debugging an issue that we thought is a problem …

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## [Reproducible Slicer crash deleting MarkupsROINodes from subject hierarchy](https://discourse.slicer.org/t/reproducible-slicer-crash-deleting-markupsroinodes-from-subject-hierarchy/36007)

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**Author:** [@mikebind](https://discourse.slicer.org/u/mikebind)\
**Replies:** 3\
**Last updated:** [May 10, 2024, 1:36pm UTC](https://discourse.slicer.org/t/reproducible-slicer-crash-deleting-markupsroinodes-from-subject-hierarchy/36007 "2024-05-10T13:36:02Z")

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I get a reproducible Slicer application crash following these steps: Open Slice (scene is empty) Run roiNode1 = slicer.mrmlScene.AddNewNodeByClass("vtkMRMLMarkupsROINode") roiNode1.SetSize((100, 100, 100)) roiNode2 = …

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## [Failure to install extension dependency does not lead to overall install failure](https://discourse.slicer.org/t/failure-to-install-extension-dependency-does-not-lead-to-overall-install-failure/35713)

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**Author:** [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Replies:** 8\
**Last updated:** [April 25, 2024, 5:54pm UTC](https://discourse.slicer.org/t/failure-to-install-extension-dependency-does-not-lead-to-overall-install-failure/35713 "2024-04-25T17:54:02Z")

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I used today’s nightly to install SlicerIDCBrowser extension. When trying to load DICOM segmentations I downloaded from IDC using that extension, I realized that QuantitativeReporting extension, which is its dependency, …

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## [Slicer Segmentation inverted normals for closed surface representation](https://discourse.slicer.org/t/slicer-segmentation-inverted-normals-for-closed-surface-representation/34762)

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**Author:** [@Thibault\_Pelletier](https://discourse.slicer.org/u/Thibault_Pelletier)\
**Replies:** 4\
**Last updated:** [March 11, 2024, 7:22am UTC](https://discourse.slicer.org/t/slicer-segmentation-inverted-normals-for-closed-surface-representation/34762 "2024-03-11T07:22:08Z")

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Hi everyone, We have recently noticed a problem when exporting STL and OBJ from segmentations in Slicer. Depending on the Volume’s affine, the generated normals can point inside instead of outside. This doesn’t cause a…

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## [How to fix the populating font family aliases issue](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739)

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**Author:** [@Koko000000000000000](https://discourse.slicer.org/u/Koko000000000000000)\
**Replies:** 2\
**Last updated:** [November 11, 2023, 5:14pm UTC](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739 "2023-11-11T17:14:27Z")

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I just installed slicer on my MacbookPro that has an M2 chip, but I’m face with this problem Python 3.9.10 (main, Aug 19 2023, 07:11:06) \[Clang 14.0.6 (https://github.com/tru/llvm-release-build 686807a176470032c208f2 …

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## [Slice intersection lines are "refracted"](https://discourse.slicer.org/t/slice-intersection-lines-are-refracted/31590)

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**Author:** [@moraleda](https://discourse.slicer.org/u/moraleda)\
**Replies:** 0\
**Last updated:** [September 6, 2023, 11:12am UTC](https://discourse.slicer.org/t/slice-intersection-lines-are-refracted/31590 "2023-09-06T11:12:47Z")

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Hi there, I am recalculating the slice views to see a line in two parallel and one perpendicular view. In the perpendicular view, there is a weird bug that the slice intersections are broken or refracted (see the screen…

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## [Pandas dataframe .to\_json() crashes Custom Application](https://discourse.slicer.org/t/pandas-dataframe-to-json-crashes-custom-application/28954)

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**Author:** [@brandus1](https://discourse.slicer.org/u/brandus1)\
**Replies:** 1\
**Last updated:** [April 17, 2023, 4:01pm UTC](https://discourse.slicer.org/t/pandas-dataframe-to-json-crashes-custom-application/28954 "2023-04-17T16:01:03Z")

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Hi, I have a custom app built with SlicerCustomAppTemplate (slicer 5.2.2). I compiled the application on ubuntu 20.04 (docker), and a weird thing is happening. calling .to\_json() from any pandas dataframe crashes the …

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## [Bug: \[5.2.1\] Data is loaded from database but doesn't appear under "Loaded data"](https://discourse.slicer.org/t/bug-5-2-1-data-is-loaded-from-database-but-doesnt-appear-under-loaded-data/27174)

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**Author:** [@Gabriel\_WK](https://discourse.slicer.org/u/Gabriel_WK)\
**Replies:** 2\
**Last updated:** [January 12, 2023, 5:42pm UTC](https://discourse.slicer.org/t/bug-5-2-1-data-is-loaded-from-database-but-doesnt-appear-under-loaded-data/27174 "2023-01-12T17:42:13Z")

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Problem report for Slicer 5.2.1 win-amd64: Expected behavior: Loaded data appear under “Loaded data” on the DICOM Module Actual behavior: Nothing appears under “Loaded data” Data still showing normally on the Da…

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## [Volume Rendering doesn't show up](https://discourse.slicer.org/t/volume-rendering-doesnt-show-up/26408)

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**Author:** [@kaveh\_yousefpouran](https://discourse.slicer.org/u/kaveh_yousefpouran)\
**Replies:** 2\
**Last updated:** [November 23, 2022, 9:20pm UTC](https://discourse.slicer.org/t/volume-rendering-doesnt-show-up/26408 "2022-11-23T21:20:12Z")

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Operating System: Win 11 Slicer Version 5.0.3 / 5.0.2 Problem: When I load a scene, 3d volume rendering doesn’t show up, but when I load a fresh DICOM bunch, 3d volume rendering works just fine. I tried all rendering o…

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## [SlicerCustomAppTemplate build fails on Loadable Module](https://discourse.slicer.org/t/slicercustomapptemplate-build-fails-on-loadable-module/24939)

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**Author:** [@brandus1](https://discourse.slicer.org/u/brandus1)\
**Replies:** 1\
**Last updated:** [August 27, 2022, 10:35pm UTC](https://discourse.slicer.org/t/slicercustomapptemplate-build-fails-on-loadable-module/24939 "2022-08-27T22:35:41Z")

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I have a SlicerCustomApplication with a loadable module with this tree structure: . ├── CMakeLists.txt ├── Logic │ ├── CMakeLists.txt │ ├── vtkKernelFeedMultiply.cxx │ ├── vtkKernelFeedMultiply.h │ ├── vtkSlicer…

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## [Report a bug in function " DICOMUtils.loadPatientByPatientID(patientID); "](https://discourse.slicer.org/t/report-a-bug-in-function-dicomutils-loadpatientbypatientid-patientid/24074)

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**Author:** [@zhang\_ming](https://discourse.slicer.org/u/zhang_ming)\
**Replies:** 1\
**Last updated:** [June 28, 2022, 12:29pm UTC](https://discourse.slicer.org/t/report-a-bug-in-function-dicomutils-loadpatientbypatientid-patientid/24074 "2022-06-28T12:29:04Z")

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DICOMUtils.loadPatientByPatientID(patientID); If the patientID use long string like : 2b89691a0744504491ef91d711d94918, it will failed. because I found the entry in sql database. but the 3d slicer python terminal repo…

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## [Install extension](https://discourse.slicer.org/t/install-extension/21547)

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**Author:** [@Linhsia\_Noferini](https://discourse.slicer.org/u/Linhsia_Noferini)\
**Replies:** 2\
**Last updated:** [March 18, 2022, 9:22am UTC](https://discourse.slicer.org/t/install-extension/21547 "2022-03-18T09:22:26Z")

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Problem report for Slicer 4.13.0-2022-01-19 win-amd64: \[please describe expected and actual behavior\] Hy, when I open the install extensions tab, the slider at the bottom says 100% but the page appears white, I cannot …

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## [Segment Geometry Extension showing more slices than what exists](https://discourse.slicer.org/t/segment-geometry-extension-showing-more-slices-than-what-exists/21756)

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**Author:** [@Michel\_Atieh](https://discourse.slicer.org/u/Michel_Atieh)\
**Replies:** 3\
**Last updated:** [February 19, 2022, 11:19am UTC](https://discourse.slicer.org/t/segment-geometry-extension-showing-more-slices-than-what-exists/21756 "2022-02-19T11:19:02Z")

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Hello, I have noticed when segmenting organs on 3D Slicer that when using the Segment Geometry Extension it shows more slices than what I have contoured. The more the slices I contour the bigger the error (for 60 slices…

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## [Maybe this is a bug of Color module](https://discourse.slicer.org/t/maybe-this-is-a-bug-of-color-module/21181)

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**Author:** [@slicer365](https://discourse.slicer.org/u/slicer365)\
**Replies:** 0\
**Last updated:** [December 22, 2021, 2:55pm UTC](https://discourse.slicer.org/t/maybe-this-is-a-bug-of-color-module/21181 "2021-12-22T14:55:36Z")

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When I adjust the Size bar , it does’t work .

[Next page](https://discourse.slicer.org/tag/bug/18.md?match_all_tags=true&page=1&tags%5B%5D=bug)