Anybody else having luck without doing the work-a-round?
No this is still a Microsoft “newer OAuth token issue” and you still need to do the supplied eM Client workaround till that is resolved.
Or optionally remove and readd your current account and do an Exchange Microsoft setup instead via the following eM Client support link. I personally did this option and worked fine.
Note: The difference is that the exchange setup has a delay of aprox a minute receiving email compared to normal IMAP pretty much realtime.