I tried setting the default keyboard shortcut to Hide normal windows (Show desktop) to Super + S.
It didn't work and now whenever I press Super + S, I get the workspace switcher. I tried setting Hide normal windows back to Ctrl + Super + S, but it doesn't work. I'm still getting the Workspace switcher.
How can I reset these two settings? I use the Show Desktop quite a lot and it is quite annoying not being able to do it.