Hello everyone. I have an odd problem and I was wondering if I can get some guidance on the solution. I am currently using Fedora Linux 42 with KDE Plasma 6.3.5 on Wayland. I have noticed that ever since I installed Fedora onto my desktop computer, I get this issue when I move certain windows across my desktop (ex: Steam), it will leave a trail. I have added a picture of the trail (had to take it on my phone. It would go away if I tried Spectacle). I have also included the output of kinfo here:
% kinfo
WARNING: radv is not a conformant Vulkan implementation, testing use only.
Operating System: Fedora Linux 42
KDE Plasma Version: 6.3.5
KDE Frameworks Version: 6.13.0
Qt Version: 6.9.0
Kernel Version: 6.14.5-300.fc42.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 16 Ă— AMD Ryzen 7 9800X3D 8-Core Processor
Memory: 60.4 GiB of RAM
Graphics Processor 1: AMD Radeon Graphics
Graphics Processor 2: AMD Radeon Graphics
As well as a screenshot showing the specs on my computer.
I would appreciate any help/advice on what to try to fix this 
Hi! Just checking something - in the System Settings > Display & Monitor page, are you using screen scaling above 100%, and is the Legacy applications (X11) setting on “Apply scaling themselves”?
If so, this might be a form of the same issue reported here in the KDE Bugtracking System: 490075 – One-pixel rendering artifacts in high DPI XWayland applications with "Apply scaling themselves"
That seems to be it. I checked and saw I had Legacy Applications (X11) on “Apply scaling themselves” and the screen scaling at 115%. When I set the screen scaling to 100% and Legacy applications (X11) to “Scaled by the system” the trail wasn’t there when moving the Steam window or Obsidian (which was another notorious culprit of the trail). Thank you for the quick response!
A weird thing was that I have another larger 32" monitor that also had the trail and scaling was at 150%. Setting the scaling to 100% made everything was quite small (at least for my eyes). Weirdly enough, turning off my PC, unplugging it, plugging it back in then turning on my PC fixed the trailing issue on that screen specifically. No clue why, but I’m not going to question it.
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Hey guys. Quick update about something I just found regarding this. My larger monitor started getting the trail again. While I can’t turn the scale down to 100% due to my lousy eyes. @johnandmegh 's post got me thinking. Turns out there is some sort of threshold. 140% and under: no trail. Once the scale is set to 145% and up, the trail appears. Anyways, it’s set to 140% which is good for me. Figured I’d update this in case anyone else gets this issue
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