I recently am having an issue with MS Teams while running fiddler. MS Teams keeps giving disconnect errors. That's when I noticed that fiddler it proxying it's traffic even though I have filters set to "Show only the following Hosts", and teams.microsoft.com are not included in the hosts. I also notice other items in my sessions list that are not in my list of hosts so what is going on?
I don't really want to post my list of hosts publicly. If you need them, please let me know and maybe I can email them to someone.