Created attachment 117127 [details] video SUMMARY Artifact while moving a transparent window with the wobbly effect STEPS TO REPRODUCE 1. Turn on Kwin's wobbly effect 2. open Konsole > Edit current profile > Appearance > Edit > change the background transparency to e.g. 35% 3. Move the Konsole window OBSERVED RESULT A horizontal line appears between the titlebar and the main window See the video. EXPECTED RESULT That line should not appear.
Please provide the output of: qdbus org.kde.KWin /KWin supportInformation
That's texture bleeding. Probably dup of bug 257566.
(In reply to Martin Flöser from comment #1) > Please provide the output of: > qdbus org.kde.KWin /KWin supportInformation Here you are: https://paste.kde.org/pnw4fwcn1
*** This bug has been marked as a duplicate of bug 257566 ***
I just wanted to add that this isn't just about the wobbly effect or translucency. You could also see it when showing the desktop cube, sphere or cylinder with opaque windows and opaque title bars.
A comment on reddit: > I noticed this on my system and I also notice that when I set the "Scale Method" to "Crisp" in the compositor settings it doesn't seem to happen. (https://www.reddit.com/r/kde/comments/aa0a9k/yet_another_magic_lamp_effect/eco6twi)