WDialogs appear at the bottom-right of the browser window instead of centered, when shown with WAnimation::SlideInFrom*
WDialogs no longer center correctly. If shown with WAnimation::SlideInFrom... Top, Bottom, Left, or Right (other animation types appear to be OK), the dialog will get positioned in the bottom right corner of the browser window, instead of the correct placement in the center. If something on the dialog is clicked, it will immediately center itself.
I believe this problem was introduced at the same commit as bug #1306 or a few before that.