It's never recommended to switch desktop environments by simply installing it from the repository and explicitly stated not to for Plasma.
WARNING: Do NOT attempt to install ANY other desktop environments next to KDE Plasma Desktop. This scenario is NOT supported and you will be told so in no uncertain terms if asking for support.
Source: https://getsol.us/articles/software/desktop-environments/en/
It has previously caused issues only experienced by people who did not listen to advice to reinstall with the edition of their choice and is now entirely unsupported.
