LXDE (also tried awesome window manager)
Broken: c226488a2722560b9a09ed7156b5778850a86895 (and earlier for at least a month)
Short description of error
When I go to play an animation in the internal anim player the animation doesn't fill the whole window. Resizing the window doesn't fix it, the animation stays at a fixed size, but if I resize the window large enough the animation will then get a little bit larger. Changing the render size doesn't change the anim size either.
Exact steps for others to reproduce the error
Render an animation, play it in the internal render player.