I'd love to get to the bottom of this. I was hoping it was just a
Mozilla bug and would eventually go away with a new release, but it
hasn't. Here's a document with screenshots that describes the problem:
Michael: In your Config #2, if you set your 'Personal namespace' in
the Advanced IMAP server Settings box to be "" (that's two double quotes
- you can't just leave it empty) it will work almost correctly.
Ok, I've put this up as Configuration #3. Did you check that particular
configuration both with and without the --enable-workarounds option? If
so, did either way make any difference?