Regex doesn't work Rated 3 out of 5 stars

As far as I can tell, the "Subject Regex Match" test doesn't work, at least in the Find window and saved searches. Regex searching is the reason I installed this extension. It would get 5 stars for regex capability alone, if it worked; instead, I'm giving it 3 because it's a good idea, just not quite finished.

This review is for a previous version of the add-on (1.1.0).