Missing all appplication links and icons in KDE Plasma launcher?

This might happen because of failed / unfinished update. The fix is quick and easy, run the below as user, in which session you're experiencing this:

$ kbuildsycoca5

Start here

Disable Firefox from updating itself and flash those annoying "Restart to Keep Using Firefox" messages on you

I recently switched from Brave to Firefox. Just because Brave appeared to be some proprietary shit, even though they're masking themselv...