Revealing: In "The Bermuda Triangle Crisis" when Wonder Woman drops a mine into the water, she's supposed to be dropping it into the ocean. However, you can see a drain plug of some sort in the background and the "ocean" is obviously a pool, or similar.

Continuity: In "The Feminum Mystique (1)" when Drusilla changes into Wonder Girl for the first time, if you look at the ground while she's changing, you can see the leaves instantly change positions all around her.