KDE Debian 12 Bookworm - App freezes after screen timeout

Great app, but if the screen goes off or timeouts then I re-enter the desktop, Tuner is greyed out - I can see the GUI but cannot interact with it. I have to kill, then restart it.

KDE 5.27
Debian Bookworm Stable
X11
Flatpak version
(I uninstalled flatpak and compiled from source - and same issue when it's not a flatpak)
