When He-Man throws a Gargon warrior into a pool of mud, the horns on his helmet are gone when he emerges.
When Garn and He-Man race towards the trap Battle Cat is stuck in, for once shot that shows their legs running towards the camera, He-Man is holding his Power Sword in his hand. In the shots preceding and following it, the sword is on his back.
Battle Cat is trapped in a pit trap and twice do we get a sense of how deep it is during a panning shot. When He-Man and Garn rescue Battle Cat by forming a human ladder, the trap is suddenly much less deep than it was before.
A Gargon guard hands He-Man back his Power Sword. In the next shot, He-Man is shown holding up his arm with it as if he had to reach up to grab it rather than from below.