As per title, the official flatpak applications get stuck on a loading screen when launched from the bigscreen session, but are completely usable within the main session. I have tried disabling fullscreen launch for the HTPC app just in case but that did not seem to fix anything.

Does anyone have any ideas?

I also wouldn’t mind if someone knows a URL that would link to the plex 10-foot ui (so not app.plex.tv/desktop, instead a URL that gives the more controller friendly UI).

If it matters, I am on Fedora Kinoite (KDE Atomic Desktop) with Plasma Bigscreen and Tailscale-cli as the only layered packages.