Created attachment 181904 [details] Moving a cancer window and noticing effect, I lost one of them outside the screen and got confused half of the recording SUMMARY Sometimes, for a reason I can't seem to pin down, a bunch of small windows belonging to KDED6 appear at 174, 190 and are either 1x1 or 20x20, they are dead-pixel-like in appearance and behavior. They block mouse events but yet not focus-able. They generate funky looking visual artifacts and copy what's behind them and reset when they're resized or win+scroll zoom is used. They are reported as normal Wayland windows, not internal kwin ones. They have the NET::Popup windowType and all of them close when kill window is used on one of them. They can be moved and tiled with win+drag STEPS TO REPRODUCE I'm not entirely sure but every time they appeared I was using Firefox and watching YouTube, not sure if that is even relevant. OBSERVED RESULT Dead pixel SOFTWARE/OS VERSIONS KDE Plasma Version: 6.3.5 KDE Frameworks Version: 6.14.0 Qt Version: 6.9.0
I think I found how to reproduce this: 1. Add application menu to window title bar buttons 2. Use the one on System Settings window 3. Nothing happens (this is a bug btw), but a handful of these tumors spawn near the cursor
Please keep Bugzilla titles and descriptions technical. Thanks.
FWIW, I can't reproduce the issue if I click on the "Application Menu" button on System Settings' titlebar. What distro are you using? What kind of GPU hardware are you using?
Sorry for the original title, my bad on this one. The menu I meant was the hamburger one with file edit etc, it works for all windows but not on system settings, I don't even think system settings should have such menu. Anyways the glitches are caused by real actual windows that can be noticed through kwin debug. I'm using Arch Linux, latest packages and my GPU is AMD Radeon HD 7560D
I can't reproduce on the device below. Just to check, does the issue occur under a newly-created user account? Operating System: Fedora Linux 42 KDE Plasma Version: 6.4.80 KDE Frameworks Version: 6.16.0 Qt Version: 6.9.1 Kernel Version: 6.14.11-300.fc42.x86_64 (64-bit) Graphics Platform: Wayland Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor Memory: 32 GiB of RAM (30.4 GiB usable) Graphics Processor 1: NVIDIA GeForce RTX 4070 SUPER
I just tried, yes it does occur on a new user.
This occurs with other system apps like System Info and System Settings, where I don't think they normally have a menu bar, so they also should not have the menu button in their decoration. However, pressing it results in a new 1x1 window where a menu would appear.
Hmm...just to double-check, what method/commands were used to install KDE Plasma on your device? And do you have any graphics drivers for your AMD card installed or activated other than just what comes naturally in the Linux kernel? Thanks!
Installed the plasma group with pacman, and I'm only using the default kernel driver as no other one supports my GPU, and using Mesa for OpenGL.