When I tried KDE Plasma 5.22 I found some strange bugs:
- Global Menu was not shown on the menu bar.
- When I deleted the task bar and added the new one, pressing the super key couldn’t open the application menu any more.
- Switching the touchpad from reverse scrolling to natural scrolling got reset after restarting new session.
Then I found the culprit was because I put export PLASMA_USE_QT_SCALING=1 in ~/.bash_profile to improve HiDPI on KDE Plasma. After deleting this environment variable all of the issues above disappeared. Is this an OpenSUSE exclusive issue? I remember one and half year ago I didn’t have any of the issues on Manjaro KDE when I enabled this environment variable.