SUMMARY Copy and pasting filter mask HSV/HSL Adjustment and Levels makes white pixels black STEPS TO REPRODUCE 1. Make one of those layers 2. Ctrl-C 3. Ctrl-V OBSERVED RESULT Layer is completely black EXPECTED RESULT Layer is white SOFTWARE/OS VERSIONS Windows: 10 macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Hi, I'll try to reproduce this tomorrow and set to confirmed if I can reproduce it. I've changed the importance to normal. Thank you for your report.
I can confirm this for appimages from 4.3.0 to the Feb 07 5.0.0 prealpha (git 56c1de). If you first do a paint operation on the mask, such as a small dot in the corner, then copying and pasting it seems to have no problem.
Sometimes the bug happens, and sometimes it doesn't. It's not very consistent.
Reproduced in 4.4.1 but resolved in 5.2.6! Seems to have been an issue with bounds not being properly set. When there was something drawn on the mask the copy would have trimmed the bounds to contain only was on there. Presumably a blank/white mask resulted in a copy with zero size bounds.