Managing sound and video settings during Teams meetings and calls
This worked for me in Windows 11.
Control Panel >> Sound >> Playback >> BT Headphones >> Properties >> Advanced >> (Untick) "Enable audio enhancements"
This made the headphones work in Teams, and stopped the BT stack from crashing. But I still had no microphone on a test call.
To solve that:
Control Panel >> Sound >> Recording >> Headset >> Properties >> Advanced (Untick) "Allow applications to take exclusive control of this device"
After these two changes were made, Teams seems to be working as expected.