After booting my computer in the morning i realized mouse gestures for firefox are not working anymore (triggered by button nr 3) and my kwin rules for firefox are not working too (being ignored or cleared – i can't remember anymore). I removed kwin script for Firefox and tried to create new one with alt+f3→More Actions→Configure Special Window Settings…, but no matter which properties i add kwin doesn't store them. I have had to write them manually from system settings and only now they apply. Same goes for nicotine (also gtk). It seems to be working for qt apps though (update: exclude rules from gestures don't work). But i discovered more. Maximized firefoxs scrollbar is not constantly selected on hover if moving cursor ( https://streamable.com/cnessa ) so sometimes i can't simply grab and move it. This problem occurs around all edges so there are also „dead places” on my tabs that also don't receive the click. Nicotine (gtk3) has same issue ( https://streamable.com/nvfymh ) . I haven't changed anything in system settings that could trigger this weird bugs other than turning „slide back” effect for a few moments to see it in action and turned it off minutes later (i don't suspect it has anything to do with the issues). Here https://i.imgur.com/Hp5FIv9.png is the list of the updates i did before turning pc down the night before, but to my surprise there doesn't seem to be anything that could cause any of my issues. Have anyone any idea what could be the case? How to actually narrow down the cause of this weirdness and enjoy mouse gestures again? Are there any special files that could get corrupted? KDE neon 5.19.3 here.