Desktop switch doesn't work with mouse wheel.
STEPS TO REPRODUCE
1. Right click on the desktop
2. Click on 'Configure desktop and wallpapers...'
3. Add a new action for 'Vertical-Scroll'
4. Select Switch desktop
Absolutely no result.
Desktops should switch when I use the mouse wheel in one of them.
KDE Plasma Version: 5.21.5
KDE Frameworks Version: 5.82.0
Qt Version: 5.15.2
*** This bug has been marked as a duplicate of bug 419878 ***