Additional features, settings, or issues not covered by specific Microsoft Teams categories
I ended up opening a service ticket with O365 support. I gave them a detailed breakdown of my troubleshooting steps and I made a stupid mistake..... I told them that I was only experiencing that issue with a specific Windows profile on that machine and they instantly decided to "drop the ball" telling me it "probably" was an OS issue (predictable) and that I needed to rebuild the user profile. Teams installs are user-based....OF COURSE IT'S A PROFILE ISSUE! I wasn't much from Microsoft support given my past experiences, but it's still very dissapointing.
I guess I won't have a choice but to rebuild the user profile.....which might end up taking less time than investigating further, but gives me absolutely no guarantee that I will not encounter this problem again in the future. Thanks for your input!
Good luck Stefania! :)