Didnt encounter any weird issues yet aside from it asking me to deactivate the license on another machine which was odd but maybe I reached my total activations again since I tend to reinstall windows every few weeks and backing up the license doesnt help since after a clean new install my windows id is different then on the previous install so I need to reactivate my windowsfx every time.
The new activation system requires that you deactivate before uninstall, or reinstalling your OS.
Why on earth would you reinstall Windows every few weeks?
Anyway, you open your WinFX, or any other Stardock app, look for "change license", click "deactivate this machine". Then uninstall.
Otherwise, the activation system will think it's still installed on another machine.