STEPS TO REPRODUCE 1. Open Systemsettings. 2. Grab the scrollbar of the category list with your mouse (keep left button pressed). 3. Move slowly up or down. OBSERVED RESULT The category items "jump" up and down a tiny bit while scrolling, which looks a bit glitchy. EXPECTED RESULT No glitches during scrolling. SOFTWARE/OS VERSIONS KDE Plasma Version: 5.81 KDE Frameworks Version: 5.245 Qt Version: 6.6.0 ADDITIONAL INFORMATION Best visible when running on real HW, but I see it also in a VM. Tested under Neon Unstable and openSuse Krypton live image.
Seems independent of running Wayland or X11.
Cannot reproduce on bare metal and Wayland. Can you attach a screen recording that shows the issue?
Created attachment 163536 [details] Video of the glitches Ok, added a screencast showing the glitches. I forgot to mention, this is something new in Plasma 6 (the animation looks fine in Plasma 5).
Ah, can reproduce now after seeing how slow you're dragging the scrollbar. I wonder if this is an issue with the new smooth scrolling code in WheelHandler. Will investigate.
This is likely related to the new separator style.
Cannot reproduce anymore with either 200% or 225% scale. Some patches went in to better pixel-align things, so I suspect they fixed it!
(In reply to Nate Graham from comment #6) > Cannot reproduce anymore with either 200% or 225% scale. Some patches went > in to better pixel-align things, so I suspect they fixed it! Strange, can still reproduce it – in a VM (Neon Unstable) and on bare HW (self-build Plasma 6.0). Changing scale to 200% doesn't make a difference for me (my default is 100%). Using a different mouse doesn't change anything either.
Created attachment 177107 [details] The scroll glitch in setting pages The bug is not restricted to the side view, it is also present in scrolling of some setting pages, like the one with all the animations. I am also thinking that the bug is related to the section separator, and probably because the bar doesn't take it into account correctly. SystemSettings : 6.2.4 Operating System: KDE neon 6.2 KDE Plasma Version: 6.2.4 KDE Frameworks Version: 6.9.0 Qt Version: 6.8.1 Kernel Version: 6.8.0-51-generic (64-bit) Graphics Platform: Wayland
Created attachment 177108 [details] Scroll bar changing size The bug has a reverse version : when you scroll without using the scrollbar, the scrollbar changes size many times during scrolling. I am sure it is a second manifestation of the same bug.