Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
I find that my Microsoft Teams app on my phone stops working at the same time as the email so perhaps this is something to do with authentication?
I don't think so. I can reproduce the issue with both Microsoft Outlook email account and my own IMAP mail server that is independent of Microsoft infrastructure. The bug is there for a long time.
There is also additional side-effect, the red dot notification badge also doesn't work when a new message arrives. But when you open the Outlook app second time, it is there.
I don't get Microsoft still haven't fixed it.