Task manager 'opaque' setting not applied (plasma 6)

[cscs]

Well if you are referring to refreshing the desktop then you missed … just about everything

@cscs

I will type it out again.
This time will be a single string with some added messaging.

cd ~/.config && for j in plasma*; do mv -- "$j" "${j%}.bak"; done && mv Trolltech.conf Trolltech.conf.bak && rm -rf ~/.cache/* && kbuildsycoca6 --noincremental && cd ~ && echo -e "\nFinished Clearing Plasma Settings and User Cache.\n\nPlease Reboot.\n"

https://wiki.archlinux.org/title/KDE#Configuration_related

But what I said was

@cscs

Your plasma style is not up to date for Plasma 6 or is otherwise incomplete.

Which means you need to use an up to date and complete theme.
Breeze for example.