Audio issues when using New/or Old Teams in Win10/Win11 AVD

Hi - In the past month or so our users have been reporting strange audio issues. Not present for a year or so before.

A user can hear music in AVD and local device, then take a teams call ok. Once hung up the next call User cannot hear the caller but caller they can hear the user.

In this state music stops working in AVD, and on local device.

We have found if the user disconnects AVD local audio starts working again, and once reconnected to AVD audio/calls work again. 

We get this in AVD - We have two environments Win10/old teams AND Win11/new teams. (All up to date) And it occurs in both.

We have been using a variety of BT dongle Jabra headsets (all up to date) and doesn't appear to relate to device type.

We are latest Remote Desktop Client version however happened on previous version or two also.

Any advise or similar stories will be helpful. We are pulling our hair out when staff complaining and bad look to customers.