Doomsday shatters Wonder Woman's sword almost up to the hilt but a few seconds later the remains are much longer next to her unconscious body.
When Lex walks up with the green hypodermic he is standing on the left of Superboy but a few seconds later he is on his right.
S.T.A.R. Labs is an acronym meaning Scientific & Technological Advanced Research Laboratories but the sign on the wall has no full stop after the R.
When Doomsday attacks Luthor's sub, at that depth, it should have imploded immediately instead of just Flooding.