Rated 4 out of 5 stars
When I update to a newer version and I click on the Showcase on the right it appears a black overlay for thumbnails tab navigation
But I have installed the addon "Firefox Showcase" and in the past versions (184.108.40.206), when I hit the Showcase button, it opens the Firefox Shocase box.
I've tried diffrent options or settings in Firefox but can't get it work.
So i guess it's a BUG?
Thanks for great work!