Me and my five friends rolled back to Bazzite 43. With this update Bluetooth is completely useless for us. Our speakers are not even recognised as speakers. Even my Bluetooth headset behaves the same.
The only option I get in my Bluetooth audio settings is something like Audio gateway A2DP source and HSP HFP AG.
In version 43 our speakers show up as high fidelity playback A2DP sink and that works perfectly. After the rollback everything works again.
People on Reddit have the same Bluetooth issues or other problems and they are also going back to version 43.