More Scooby-Doo Movies Glitches: Sandy Duncan

There are more mistakes abroad when Scooby-Doo meets Sandy Duncan, like these:

We can see the phantom through the hedge, which could make sense, as it's just a prop. But Scooby's not visible behind the same hedge.

We know that can't be a coin slot in an Egyptian sarcophagus, not even in a phony prop; but then, what is it?

You might have to freeze-frame on the dog sled to see this: Velma sits down in an impossible pose in relation to the side rails, so that she's between the rails and behind those on the far side at the same time, kind of like an M.C. Escher print. Then the side rails disappear altogether, probably because the animator got so confused he just left them out. More glitches...