

This fucking bug is not new, and not special to KDE. It’s because there’s missing documentation in a lib just above Wayland, so it only affects some apps that aren’t using a higher level toolkit, Firefox is in that box. The bug is literally 8 years old and would literally require one fucking line of code to fix, but the cunts over at freedesktop refuse to merge the changes. If I were at my main computer I’d send you the link and details.
One thing that sometimes fixes it, is the menu key next to the spacebar.
Low magnesium.