Bluetooth speaker profile selected as duplex in audio settings, until forced by wireplumber config

Hello!

Since I’m not sure whether this is a bug with kde per se, or a bug at all, I decided to first post here and maybe get some input from you lovely folks.

My bluetooth speaker recently just stopped working and for some reason the profile was a2dp duplex source/sink sbc, which did not work at all and I also could not switch to sbc-qx. Now I managed to get around this by forcing A2DP sink as the active Bluetooth profile using a WirePlumber configuration file, but if I try changing to sbc-qx in the audio settings it just reverts to duplex again (but I can just restart wireplumber and have it working like that at least).

If this indeed could be a bug I would appreciate any guidance on how to report it, or if not generally as to what went wrong there.