This is nice thanks for sharing
this is one of those questions better asked in debian forums if they still haven't released it
for a complete unisntall you should just be able to run sudo pacman -Rns <package_name> or yay -Rns <package_name> depending on how it is installed.
since you're doing a complete unsinstall and reinstall, you should be able to just run sudo pacman -Syu <package_name> or yay -Syu <package_name> and it will completely reinstall. If you are worried you have a corrupted download of the file, clear your package cache completely and run those commands, it should download a clean program install file and reinstall.
I'm not familiar with Mangohud and Goverlay, so unfortunately can not help our further, but maybe one of our other community members can.
Debian will have the new KDE when they do their massive update, otherwise there is the testing and unstable branch to look and see if they have it there.
it's a way to keep info going into community so it doesn;'t get stagnant and others can find it.
I would change the community name but the only way to do that is by deleting the whole community and starting over again. Also people do make scripts for new packages, This way they can know what changes they might need for their scripts if use any.
This also allows people to know about upcoming changes which will allow more help in troubleshooting issues that happen.
feel free to come back and ask for more help if that doesn't fix it
have you tried the 555 beta driver?
Since this seems to affect your montior, I'm kind of leaning towards this being more of an nvidia issue. I would recommend trying the 555 beta driver to see if that fixes it at all. Worse case scenario you might have to wait for KDE 6.1 to hit the repos to see if that helps too.
I don't use nvidia myself so I can't readily check it nor am i aware of how to install the beta driver, i think it's in the AUR.
what driver are you using for your GPU?
have you tried a different nvidia driver? were the results the same?
Trees need loving too
Congratulations to everyone who has been here from the beginning as well as to all our users that continue to make this feasable.
And a large thank you to Demigodrick for starting such a wonderful endeavour.
save you a little changes here, Kate and Kwrite are now combined as one install.. When you install one you get the other as they are no longer separate packages.