I do a fair bit of freelance and also access a lot of client networks remotely or using their hardware. I have my own licence for ms365 as well on my own hardware.

Teams just doesn't know what the fuck it's doing. It holds on to old accounts from years ago but doesn't recall my own, active account. It behaves in the app sometimes but a lot of the time the browser option is the only viable way. It can't work out that I have a webcam most of the time.

Almost all meetings I have begin with me being 2-3 minutes late and messaging them that teams is being a fuck. And they all laugh knowingly, because everyone literally expects it.

It is the buggiest most unpredictable piece of shit that I have to use almost daily, and almost exclusively with government clients who often have their own weird on prem custom version. I hate it with every atom in my body.