User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101020 Firefox/4.0b8pre Build Identifier: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b8pre) Gecko/20101020 Firefox/4.0b8pre The new tab seek animation turns counter-clockwise, opposite to the loading animation which turns clockwise. This disrupts the smoothness of the animation. It could be fixed by reversing the order of the animation frames. Reproducible: Always

Quoting the dupe: == I just updated my Minefield installation, and one of the first things I noticed was the unusual spinning direction of the Throbber. I think, by spinning anti-clockwise, it's just distracting in the "Hey look, I'm so cool by being different!!!" sense. I believe it would be better if the Throbber spinned clockwise instead. I'm not sure if this also applies to Mac and Windows, but if it does, I think this should be changed in all platforms. == Well, now I am informed about the fact that the opposite direction is used while seeking, bug I still think there are better ways to represent that, e.g. by altering color of the throbber.