SUMMARY

Some KWin window present/disappear 3d effects will cause Spectacle to fail to hide its window for "Rectangular Region" screenshots. You can see this in the attached screenshot made with Spectacle's "Rectangular Region" button, where the Spectacle window remains shown even though it shouldn't be visible. There seems to be a timing issue, where Spectacle assumes the screenshot is already taken before it shows itself again, but instead it seems to be reappearing after a brief disappearance too early, managing to capture itself unintentionally in the ensuing screenshot.

STEPS TO REPRODUCE

1. Go to KDE systemsettings and open up "Desktop Effects", and enable effect "Glitch [Burn-My-Windows]"
2. In the systemsettings "General Behavior" section, set "Animation Speed" to what's shown in the attached settings screenshot
3. Then press the print key to trigger spectacle, and once it comes up, press "Rectangular Region". You should now see a capture of your screen, but Spectacle is visible on it.

OBSERVED RESULT

Spectacle captures itself when it shouldn't.

EXPECTED RESULT

Spectacle isn't seen on the "Rectangular Screenshot".

SOFTWARE/OS VERSIONS

Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: postmarketOS v24.12
KDE Plasma Version: 6.2.4
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.2

ADDITIONAL INFORMATION