0.93.1 MP - Multiple selection vs. Categories

[unqltango]

OS: W10 Professional

Steps to reproduce:
Have some categories
Add some categories to photos
Select 2 photos (ctrl+click on two photos) - now you see the mix of categories in the Category Sets window.
Click on again the photo you selected 2nd - the photo is selected now, the selection disappeared from the 1st photo

Bug:
The Assigned Set window still shows the categories of both photos. Any selected new categories go to both photos, despite only one photo is selected.


Expected behavior:
Added categories go only to the selected photo.

[xnview]

Thanks to your detailed description I can reproduce