This is clearly a Shokz issue and not Teams. It may well be that MS has altered something with Teams that Shokz is incorrectly handling. I have tried other BT headphones with no issues.
Very disappointing that after extended communication with Shokz they have no serious intentions to address the issue, even so far as telling me that OpenRun is not meant to be used as a conferance call device and I should really buy a pair of OpenComm! How rude is that !!
The only suggested solution that works for me is the use of Device Setting to flip the mic source to the laptop's and flip back when need using Shokz.
Further more there is no way for me to mute/unmute OpenRun pro using the headphone device buttons. Apparantly holding +/- buttons together for 2 seconds used to work but no longer. Very poor product design and function from Shokz. They should be embarressed.