Other mistake: Throughout the movie, Hank's lab in its shrunken form is constantly jostled and tossed around, but when it's restored to full size in a new location, nothing is out of place and everything still works perfectly.
Suggested correction: Given that he has prepared the lab to be shrunken and mobilized at a moment's notice, he probably thought of this ahead of time and secured everything important in place.
Perhaps he could secure some things, but there's never so much as a computer monitor out of place.
It's a fair point. I agree that some things should definitely be out of place, but given the importance of what he is working on, he would take measures to ensure that the important things wouldn't become damaged and inoperative when the lab is being moved around. We see on at least one occasion that he has ants roaming the lab, so it's possible he trained them to ensure that the Quantum Gate and any device essential to its operation are protected at all times.
In a world in which a man becomes the size of an ant, I guess any correction could be invalidated. I this case, there are any number of reasons why everything, down to paper and pens, never moves. Maybe the ants pick them all up. Maybe gravity works differently when shrunk. This means that basically any movie that uses magic or magic type technology would never have a valid mistake.