Continuity mistake: Inside the janitor's closet, Hope's ponytail swaps styles between shots. It's not because of how her head is tilted, as proven by two pictures of her in the same position.
Suggested correction: The hairstyle does not change. The ponytail just falls differently based on how she is tilting her head.
Continuity mistake: When Scott and Hope chat in the lab, the position of Scott's left hand is not continuous between shots. (00:50:53)
Continuity mistake: When Pym grabs his phone to watch the CCTV, his left thumb is on the upper part of the screen. A shot later it's on the lower side. This swaps back and forth. (00:35:15)
Continuity mistake: Scott stops Pym from hitting Foster, and places both of his hands on Pym's chest. A shot later, there's just one hand on him.
Continuity mistake: At the university, Pym aims at hitting Foster, and Hope stops him from doing so. She places her hand on Pym's right side of the chest. A shot later, it's on the left side.
Continuity mistake: During the chat at the university, Foster's left hand is leaning on his head. Shot changes and it's suddenly on the table, crossed over his arm. (00:34:49)
Continuity mistake: When Pym shows Hope the blueprints, both of his hands are on the table; then, she places one of hers close to his. In the close-up, there's just one hand.
Continuity mistake: Before Hope grabs the backpack, there's a small soccer ball next to it by the edge of the rack. When she grabs it, the ball doesn't drop. It simply vanishes, as proven after Scott opens the backpack.
Continuity mistake: Scott grabs the Greatest Grandma trophy from its stem. Shot changes and he is grabbing the rear side. This swaps back and forth.
Continuity mistake: Scott's size changes when he is in front of the backpack rack. On the first shot his head is 10 centimetres below a shelf, but a shot later he's 30 centimetres below, despite him looking upwards; so he's in fact way smaller.
