Anki Version: 25.07.3 on macOS
Oftentimes, scaling, duplicating (or doing anything) while having multiple Image Occlusion Masks selected leads to those masks’ positions and sizes failing to save.
To reproduce, select two rectangles in the IO editing menu, and scale them together.
https://vimeo.com/1103611736?share=copy
(I uploaded this video as an escaped Vimeo link since the forums blocks me from directly uploading it or posting an actual link since I’m a new user.)
This is almost identical to a bug reported in the past, but that bug was supposedly fixed in 2023.