Message Rules false positives/misfiling
I have a very large Message Rules set that I use to file incoming messages into various folders in my inbox. All rules filter on the 'from' field only.
Recently TB has started putting emails from some, but not all, new (to me) email addresses in one specific folder. I've very carefully checked, and the 'from' words in the new emails being moved have no intersection with the words in my filter list for that folder. The rules are otherwise working fine. The misfiled messages are often order confirmations, notices from forums about password resets, etc. What might be causing this?
Thunderbird 102.11.0 on Windows 10 22H2