Looks like any bug around logging in to the Forum may now be fixed, partially. I now log in successfully from the Forum login page.
However, I have now encountered a different oddity, which is drafting a Forum post having logged in, then being asked to log in again when trying to Submit and finding the draft message wiped when I have then logged in a second time.
Post-Posting Edit: Didn’t encounter that new oddity with this Post, though.
