I destroyed my Flatpak cursor icons, help!

Help
1

Some really few Flatpak apps used their own cursor instead of the Breeze one (which is absolutely the best).

So I followed bad advice online and did:

flatpak override --user --env=XCURSOR_PATH=~/.icons
flatpak override --user --filesystem=/home/$USER/.icons/:ro

The result is that all apps use some kind of fallback cursor, black, the point-finger looks really old.

I already resetted all my apps using this script:

#!/bin/bash

app_list=$(flatpak list --columns=application)

for app in $app_list; do
  flatpak override --reset "$app" &&\
done

But the cursors stay the same.

Do you know how to get the cursor theme back? I think its some KDE runtime or something, but I am unsure.