I recently got an e-mail that's still visible on my phone but not in GNUS
through IMAP. I used gnus-summary-goto-article to search for that
e-mail. It did turn up, albeit at a wrong place. I have
(setq gnus-thread-sort-functions
'(gnus-thread-sort-by-most-recent-date))
So, I left the group, re-entered it, and the message was gone
again. There are no other messages in that thread.
In addition to IMAP, I use mbsync, but nothing like this happens
locally. And invoking C-u RET on the group doesn't help.
Any thoughts?