Two major issues... still using it however Rated 3 out of 5 stars

I'd give this extension all the stars in the world, but it interacts very badly with Tab Mix Plus, which is a must have for me. Opening more than one row of tabs or closing a tab making TM+ collapse to one row less leaves ugly visual artifacts until I click around for a while. I really wish this was resolved. Besides, as other people already said, I'd like it to react faster to hovering over a tab - and I mean IMMEDIATELY. I'm hovering there for a reason. Working this around with the alt+d shortcut, but it's not always comfortable.

This review is for a previous version of the add-on (7.1-signed).