Caused Menus to Flicker Rated 3 out of 5 stars
Sadly, this Add-On was unusable. It caused all of my menus to flicker and stay invisible (while still clickable if I guessed the location of the item to click). FF 8.0.1
EDIT: I'm not using it anymore and there is still flickering after a day. So, raised the rating to 3 stars (neutral).