Flatpaks not showing up and don't start

Got an ROG Ally yesterday.
Initially installed Bazzite GNOME but didn't like the feel.
Freshly installed Bazzite KDE.
Setup everything + Updates and reboot.
Installed various flatpaks.

Flatpaks aren't showing up in the Menu nor are able to launch from the program manager where I installed them. They do show up as installed though.

I didn't do anything else after the fresh install.
What could this be?
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