Continuity mistake: When Alice returns to the caterpillar and he says "keep your temper" he is coloured opposite to how he normally looks, with a dark blue front and light blue back. (00:34:15)
Revealing mistake: As Charlie holds Rose close and tells her that "We'll never lack stories to tell our grandchildren" after the assault of the bug swarm, the background is perfectly in focus, but the engine behind them is not - on top of showing chromakey white noise in the top right corner. (01:13:35)