# Masking/segmentations disappearing issue

**URL:** <https://discourse.slicer.org/t/masking-segmentations-disappearing-issue/33500>\
**Category:** Support\
**Tags:** segmentation, masking\
**Created:** [December 22, 2023, 12:11pm UTC](https://discourse.slicer.org/t/masking-segmentations-disappearing-issue/33500 "2023-12-22T12:11:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ndelgado](https://avatars.discourse-cdn.com/v4/letter/n/a3d4f5/32.png) [@ndelgado](https://discourse.slicer.org/u/ndelgado)\
**Post date:** [December 22, 2023, 12:11pm UTC](https://discourse.slicer.org/t/masking-segmentations-disappearing-issue/33500/1 "2023-12-22T12:11:57Z")

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When I am segmenting, sometimes it will disappear on me. I can see it in the 3D area but not in any of slices. Sometimes, this will happen after I apply thresholding, and other times, it appears to occur randomly. Is there a setting or method to resolve this? Thank you!

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [December 22, 2023, 8:15pm UTC](https://discourse.slicer.org/t/masking-segmentations-disappearing-issue/33500/2 "2023-12-22T20:15:19Z")

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Can you describe the circumstances that lead to the segment not being visible?

Perhaps you are seeing the same thing as this issue: [Segment disappears after threshold effect preview; two widgets · Issue #6874 · Slicer/Slicer · GitHub](https://github.com/Slicer/Slicer/issues/6874)