When Mercer is being chased by the drone, there is a camera attached to both the driver and passenger window but in one shot on the bridge the driver-side window is rolled down.
(About 17:20) When Bailey is introducing SeeChange on stage, the name on the screen behind him changes from its usual appearance in one shot to a completely different font, never used elsewhere in the movie, in the next.
When Congresswoman Santos is speaking on stage, the lighting on her face starkly changes between shots. In wide shots, the top half of her head is cut off by the amphitheater's shadow, whereas closer shots are evenly lit, as if she'd stepped backward or forward every time the shot changed.
When Mae and Annie are sitting in toilet cabins next to each other, the position of the two toilet paper rolls next to Annie changes back and forth.
In the backyard party scene, Bill Paxton's beer changes position (rotates) during the different camera changes. You can notice it by looking at the label on the bottle.
Members of Congress wear a pin on their left lapel that is round and says U.S. House of Representatives. Congresswoman Santos is wearing an American flag on the left and a tiny dot pin on the right.
Over dinner, mother mentions that insurance doesn't cover father's "IGIV Treatment". In actuality it is called IVIG.
When Mae puts on the body camera, it's described as "total transparency" of her life. Yet she can choose to turn it off for bathroom breaks (or to have secret meetings in the bathroom), so it's not a total record of everything she's done or said.
Video call inset views are never shown mirrored, but they are in real life as an aid to the user.
(About 11:40) In the montage of Mae's efforts to improve her feedback score, one graphic shows a single score adjusting from 80 to 81 while her average changes to 83. This is mathematically impossible.
(At around 1h 15 min) Before Mae ended her conversation with her parents on her phone, the background behind her isn't shaking when it should.
When Mae demonstrates SoulSearch by finding the location of a wanted person somewhere in the world, she says that they will choose a person at random. Yet when the person is selected, Mae is able to tell the audience many facts about that person, including why they went to prison and how they escaped, all without having to read the details on the screen.
Emma Watson's "American" accent fluctuates into her native British a lot, especially tonally.
Mae is well versed in digital tech, yet, @ 40:06 she takes a picture of her screen with a cell, when a screen shot would be just as quick, and give better resolution.