Am I the only one with this issue: For some time now, when I trigger a dialog window (a notification or a split stack menu, for instance) the window appears as usual and the background darkens and becomes impossible to interact with. However, after I close the window, the darkened background remains and I cannot do anything with the client any longer.
Don’t ask for a bug report. 
I can open the F12 menu but I cannot click on Report Bug and even if I could, I would not be able to give any details as I cannot type.