Continuity mistake: Batman enters Lex Luthor's room at night while he's sleeping, and completely casts a shadow over Lex. This wakes Lex up and he sits up. Batman has not moved from his position, but now in the next shots he is no longer casting a shadow on Lex's bed or body. (00:24:47)
Continuity mistake: After Brandon finds out he arrived in the alien craft, he walks outside in the rain where he finally translates "Take The World" as his purpose. He continues on to Caitlyn's house to tell her what he has discovered and to give her a flower. When he arrives in her room, he is completely dry.
Plot hole: So when he travels through time whatever he has on him or with him or whatever he's holding goes back in time with him just like his dog or the wood. Now he's sitting on the rock drinking a beer and his friend is talking to him and all that's heard and seen is his beer bottle breaking on the rock when he disappears through time. Makes no sense for it to fall from his hand and break if he's in possession of it. The beer should've gone with him. (01:26:30 - 01:27:30)
Other mistake: Aerial views of Yonder gave the impression that a basic grid pattern was used - parallel horizontal and parallel vertical lines that form right angles; yards were of equal area, either a square or rectangular lot. [However, some of the views from the couple's car as they were trying to find the exit showed some slightly curved roads that didn't fit the grid.] Following the sun as a way out, the couple was jumping over fence after fence - but they could've simply walked along perpendicular roads.
Suggested correction: But they tried getting out using the road by car, and they felt that the roads were causing them to go into a loop. So instead they take a route they know for sure is straight. Btw, Yonder isn't real so the way the roads bend and how the grids are made up is purely an optical illusion.
Walking (not driving) along the perpendicular fences would be the same difference only easier and less exerting. If/when they encountered a fence that looked different, that's when they could jump over it to see if it made a difference. How could they "know for sure" that the fences they were jumping over took them in a straight line? Also, they realised the clouds weren't real, so following something in the sky (the sun) was not necessarily a good idea. [This will be my only response here.].
Character mistake: Right at the beginning of the movie, introductory technobabble. "In this canister, there's a solution of protons. The canister is attached to a rotor circuit that generates the protons to the speed of light." I believe the science genius and creator of time travel mixed up the words "generate" and "accelerate" here. (00:00:50)
Factual error: Towards the end of the movie when Superman and Henshaw are fighting on the Watch Tower in space, Lois hits the sun shades to lower them so that direct sunlight can hit Superman and power him up. This is out in space with no atmosphere to filter the sunlight. The reason the blockers were there was for this reason, to keep the harmful unfiltered sun light from hitting people on the ship through the windows. However, she is able to stand there in the direct light after it's done and kiss and hold Superman without being hurt or burned by the intense direct unfiltered sunlight or its radiation.
Continuity mistake: The location and intensity of Lavinia's purple hair highlights vary throughout the movie. For example, the purple highlights on the right side were far more pronounced (two wide, distinct, vivid lines) when she got home compared to when she first met Ward. Lavinia rode her horse Comet home, so her hair would have been wind-blown and the highlights would not have been likely to be neatly straight down, especially since she has long curly hair. (00:05:10 - 00:07:13)
Continuity mistake: After Sara's mother sits at the table, the left side of Sara's hair suddenly has two clumps of strands running down her cheek and flipped in front of her chin. Sara's hair changes a few times with different camera angles. (00:44:52)
Continuity mistake: Sira pours Sprite into a glass until it is about three-fourths full, but the glass is closer to half-full when he hands it to his mother. (00:02:00)
Continuity mistake: During the sign-up for the app at the beginning the girl says "I want to be Sarah." Look at her hair; mostly in front of her left shoulder, just a couple locks on the right side of her face. At the cut, hair behind the left shoulder and a bigger right bang. Camera angles and hairstyles switch again back and forth. (00:02:30)
Revealing mistake: When Anita goes to destroy their getaway car you see her pour gasoline all over the roof and hood. Then when she lights it on fire it's only burning inside the car. (01:06:40)
Factual error: The Sheriff of the small town is wearing Sergeant stripes on her shoulder sleeves. If she was a Sheriff then no chevrons should be on her sleeves.
Continuity mistake: The cigarette the homeless man offered to Frank had a brown filter but was white when Frank had it in his mouth. (00:39:10)