The Margin size of panels in plasma change when the compositor is toggled on/off. It seems like in one settings there are absurdly large margins on the upper and lower edges of the panel, the highlighting of the currently opened app loses connection with the panel edge which looks akward with the breeze theme. Meanwhile in the other everything seems normal (like with KF5 5.76.0). I already applied the fix to fix the black lines, but the inconsistent panel margins seem to stay even after the patch is applied: https://bugs.kde.org/show_bug.cgi?id=430390 STEPS TO REPRODUCE 1. Install latest KDE Plasma 5.20.4 and KDE Frameworks 5.77.0 (with the fix applied 2. Toggle the compostior with ALT+SHIFT+F12 3. Watch how the margin size of the Control Panel changes significantly OBSERVED RESULT The margin size of the Control Panel changes significantly EXPECTED RESULT The margin size of the Control Panel should not change at all SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.9.14-zen1-1-zen / 5.20.4 (Arch Linux Stable Branch) (available in About System) Driver: NVIDIA 455.45.01 KDE Plasma Version: 5.20.4 KDE Frameworks Version: 5.77.0-2 (with the patch from https://bugs.kde.org/show_bug.cgi?id=430390 applied) Qt Version: 5.15.2 ADDITIONAL INFORMATION This could be possibly fixed by preventing the "thick margin" from the patch from affecting any Plasma Panels
Is anyone able to confirm this? Personally , I tested on openSUSE Tumbleweed too and it happened there aswell, but I don't know about KDE neon yet.
(In reply to Simon Vogl from comment #1) > Is anyone able to confirm this? > Personally , I tested on openSUSE Tumbleweed too and it happened there > aswell, but I don't know about KDE neon yet. My bug report (https://bugs.kde.org/show_bug.cgi?id=430622) may be related to this one.
Could you attach two screenshots, showing what it looks like with compositing turned on, and turned off?
Created attachment 134582 [details] Screenshots of compositing disabled
Created attachment 134583 [details] Screenshots of compositing enabled
Thank you for the reply. I attached one screenshot for each compositing disabled and enabled. The panel size itself does not change, but the margins between the panel edges and the elements on the panel do seem to change, and that does happen with all panel sizes for me. However, it might have to do with NVIDIA's drivers since it doesn't seem to be reproducible 100% consistently. I will try to build Plasma frameworks 5.78 with ABS and check if that helps.
I fear I might not be able to test KF5 5.78.0 just yet, on ArchLinux it would require rebuilding the entire KF5 stack by hand (modifying like 50 PKGBUILDS by hand) and on Tumbleweed the KDE:Unstable:Frameworks5 repo prevents my system from booting so I had to roll back with snapper. I will report back on around June 9 when KF5 5.78.0 actually becomes released.
*January 9th, hopefully. :) The Arch packagers are usually a bit faster than that. ;)
Arch just shipped KF5 5.78.0 and Plasma 5.20.5. After installing these, clearing the .cache folder and rebooting the system the behavior is still the same, the size/positioning of icons on the panel changes slightly when the compositor is toggled, as seen in the two screenshots I uploaded.
*** This bug has been marked as a duplicate of bug 430622 ***
Doesn't seem fixed. Still have this issue in Kubuntu 21.04, Plasma 5.21.4.
This was fixed in a newer frameworks version than the one shipped in Kubuntu, sadly. 5.83 IIRC.