The space shortcut to see token movement invokes more than once. The symptom is that the faded overlay of previous movement brightens to be fully opaque. Presumeably this puts many multiples of this overlay on the tabletop. Not sure if this will cause a problem eventually, but I don't think it is working as intended. To recreate: Select a token in the token layer that has been moved since it was put onto the tabletop. Press the spacebar shortcut to cause it to display previous movement. Once this is visible (as a ghosted or transparent token in its previous position and the distance indicator line) press spacebar again. The image becomes noticibly more opaque. Press spacebar again, it brightens further. Chrome latest release. Windows 7