Created attachment 119225 [details] Screen-shot of System Settings - Desktop Effects showing no vertical scrollbar. SUMMARY System Settings - Desktop Effects has no vertical scrollbar. STEPS TO REPRODUCE 1. Launch System Settings 2. Navigate to Desktop Behaviour -> System Settings 3. OBSERVED RESULT Content exceeds window height and there is no vertical scrollbar. (Screen-shot attached). EXPECTED RESULT Vertical scrollbar present... :) SOFTWARE/OS VERSIONS Operating System: openSUSE Tumbleweed 20190401 KDE Plasma Version: 5.15.3 KDE Frameworks Version: 5.56.0 Qt Version: 5.12.2 Kernel Version: 5.0.5-1-default Graphics: Device-1: NVIDIA G84 [GeForce 8600 GTS] driver: nouveau v: kernel Display: x11 server: X.Org 1.20.4 driver: nouveau unloaded: fbdev,modesetting,nv,vesa resolution: 1920x1200~60Hz OpenGL: renderer: NV84 v: 3.3 Mesa 19.0.1 ADDITIONAL INFORMATION It's been a very long time since I used this module, I've no idea if this is a new, or long standing problem.
Created attachment 119230 [details] Screen-shot of System Settings - Desktop Effects showing no vertical scrollbar for a fresh default user. Just to eliminate my own user setup. The scrollbar is also missing on a freshly created new default user.
Is your system missing the QQC2 Desktop Style framework/package?
Indeed that would appear to be the case... Installed "qqc2-desktop-style" and the scrollbar is now present. I don't know if this is some (possibly openSUSE specific) packaging error: paul@Orion-15:~$ rpm -q --whatrequires qqc2-desktop-style no package requires qqc2-desktop-style paul@Orion-15:~$ rpm -q --whatrecommends qqc2-desktop-style no package recommends qqc2-desktop-style paul@Orion-15:~$ What package should require "qqc2-desktop-style" ? Setting status back to "reported" - I'll leave you to decide it's fate :)
Basically everything in plasma desktop, plasma workspace and KWin should require it as a dependency (or else, as you've discovered, QML stuff is buggy and looks like crap). We already set a hint that it's a dependency for the Plasma 5.16 release: https://cgit.kde.org/plasma-desktop.git/commit/?id=737b114c2fa5bf0b01951eeb2eef22ce7fcdcfa1 Hopefully the openSUSE packagers will notice soon, but you can go manually bug them. :)
OK --- Thanks, have a good weekend.