5 stars would be if the next time I hit command-F I could type in a regex and it would work as expected.

Instead you have to click on the extension, type in a regular expression. Hit enter. Oh wait that does nothing, you have to hit highlight. and then it doesn't scroll or let you do much with it just highlights.

You hit enter again it goes to the next one, nope.

And what the hell is save profile do, or what is it even for. Why is there some esoteric advanced functionality when the basics fail.