FP3, Android 11: Low volume on bluetooth headset in threema calls

Hi all,

after the Android 11 update I have problems when calling someone with threema. When I use a bluetooth headset, I hardly can hear the other person. The problem is only in combination bluetooth and threema. I tested with two different bluetooth devices. Bluetooth and skype works normaly. threema with the built in speaker also works normaly.

I assume this is not a threema but a FP3 problem, as it started just after the android 11 update.

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