On release of 1st hfp voicecall, control path correctly recovers, but audio path (bluealsa, bluealsa helper) is left in a bad state, impeding audio playback on local sink for subsequent calls or a2dp streaming.

A2DP streaming can be recovered from the mediaplayer application, by reconnecting (disconnect/connect using bt icon), which effectively resets the transport and endpoints.

However, the voiecall pipeline remains broken.