Believe me, the last thing I needed to do was to create yet another username and password to deal with, so I definitely looked around first - a lot - and just did again today. I don't see any discussion of this problem after searching for all related or relevant terms. And those limited results I did see were ancient and not recent enough to coincide with the start of my problem.
So maybe someone could update me on the discussion, knowledge of, or status of fixes to this problem? That'd be great.