Skype for Business does not automatically reconnect to audio devices when docking

Hello! 

Several users are having this issue, me included. When a laptop is (re)docked (using a Dell TB16 over Thunderbolt 3) Skype keeps the laptop's built-in microphone and speaker as its selected audio devices instead of switching to the headset connected to the dock, even if the headset was set as the default last time the laptop was connected. Windows automatically sets the headset as the default audio device, but if SfB is set to use the Windows default audio device, it jumps to use the internal mic and speaker when docked. 

Got any tips? 

All drivers and firmware is up to date.