This is due to a new feature that 2D visibility of markups are now taken into account (see details here). You can either switch to a recent Slicer Preview Release or enable 2D visibility for the fiducials manually (by right-clicking on the eye icon of the markups node in Data module).
Related Topics
Topic | Replies | Views | Activity | |
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Fiducial markups not showing in 4.11.0 | 8 | 1081 | April 13, 2021 | |
Fiducials- 2D projection | 1 | 368 | June 17, 2021 | |
A few issues with the new Markups | 3 | 513 | March 7, 2019 | |
Labels for Fudicial Markups Not Appearing Until 5th-6th Fiducial Is Placed 4.11.0 | 4 | 484 | April 24, 2019 | |
Toggle fiducial marker at move slices | 0 | 151 | July 7, 2022 |