Mail Filter Not Working for TidBITS Talk

It looks like the migration has also caused my Gmail filters to no longer match some Discourse messages. The first unfiltered message is @Shamino ‘s reply in the planned migration thread, arrived at 9:08am Eastern and there are other unfiltered ones but some, including the messages in this thread, were filtered. The most recent unfiltered message arrived at 5:11pm so it seems like it’s still happening.

Is there a recommended match to use to filter TidBITS Talk? I don’t want it to match TidBITS issues. Bonus points for a rule (or rules) that also won’t filter private messages from TidBITS Talk (my old rules don’t do this).