Additional features, settings, or issues not covered by specific Microsoft Teams categories
Yes, it is a major flaw in Microsoft's account management software.
At least I could avoid showing these accounts (that always are reported with problems) in MS Teams by selecting the option in the App settings. However, the problem is still there, they are accounts from organizations I no longer work for, I have been unable to eliminate them and although a lot of users have reported this, Microsoft has not provided a solution.