Empty segmentation saved to file, but after reload cannot modify


I have a problem. I do this:

  • Load a 2D image
  • Create a segmentation in Segment editor (no click on Add)
  • Then save it to file. (A seg.nrrd is created)
  • Close the scene
  • Reload the 2D image, reload the segmentation
  • Click on Add, a new segment is is created in the loaded segmentation.
  • Choose the brush, i can draw on the image, but the segment does no appear. It is still empy.
    (segmentation and segment are visible, editable area is Everywhere)

Can you help me? I am not sure if it is a bug, or I missed something.

Thank you!

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