When Badger, Rat and Mole confront Isambard (who they think is Toad) outside Toad Hall, the camera pans over to the window of the cellar where the real Toad is imprisoned. The bottom half of the window is hidden by grass and dirt. In the next shot, from inside, the whole window is seen before the camera pans down to the real Toad who's tied up. The window, however, seems to have no grass or dirt in front of it.