[Bluez-android] A/V sync is lost when audio out device is moved away from bluetooth adapter and back again

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Dear list,
I am using bluez for andoid 5.35 and testing a2dp profile. During
testing i am seeing  the below behavior.
Connect to Sony headset(Model: MH755) over A2DP  while watching video.
Audio is played on headset. But whenever i move away from bluetooth
adapter with headset and come back again, A/V sync is lost.
But when i tried the below hcitool command A/V sync was always good.
i.e when i move away from bluetooth adapter, audio packets are
dropped.

hcitool -i hci0 cmd 0x03 0x0028 "conn_handle" 0x00 0x2F 0x00.

The value 0x2F i chose by trying with different values.

Has someone already faced this problem? Shouldnt this be handled in
bluez stack code? Please share your views.

many Thanks
prabhu chawandi
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