When a call comes in while I'm streaming Spotify through a bluetooth headset, the music pauses as you'd expect, but regardless if I take and complete the call or reject the call, the music will not resume through the headset. The Spotify app indicates it's playing, but nothing comes through the headset. Only remedy to resume the music is to power cycle the headset, and/or reboot the watch. This is while using the watch as a standalone player, my paired phone is not connected. Very annoying and seems like a bug.