I just installed the newest version for Mozilla Firefox (v18.104.22.168) and found one disturbing feature. Take a look at the picture below please.
Usually, the close button is located at the red circle. But now, it is on every tabs (yellow circles). I think, in the old versions, there is a choice to select skin but I can't find that option here. I tried downloading some themes but it doesn't work either. Any clues? Thanks.
PS: Sorry about the image size.