Every 3rd or 4th time that I use Teams, my audio settings end up totally screwed up. The most annoying one is that the list of available output devices drops the listing for the aux output, and sound is piped out the aux jack and the internal speakers at the same time. I can follow the steps in the following troubleshooting article to reset everything and get the options back to configure things how I would like them, however I have to use the steps in #1B which requires a full reboot. That is insanely annoying when you have multiple tmux sessions and countless tabs open. Aside from this problem I usually go a month or more without needing to restart my machine.
https://help.ubuntu.com/community/SoundTroubleshootingProcedure
I reset everything and rebooted last night. After a single Teams meeting today, the ability to change my microphone amplifier setting is already lost. At least it isn't outputting on both devices yet and the current mic setting is OK.
I am currently stuck at 16.04 for a little while longer due to dependencies surrounding software that I use at work.
I am on a Dell Precision 7510 with the following chipset if the hardware is related. I am not currently using any external USB attached microphones or webcams:
Audio device: Intel Corporation 100 Series/C230 Series Chipset Family HD Audio Controller (rev 31)
Insanely annoying.