Other mistake: Hutch states he had a "Suppressed H&K USP .45 at the back of his head. The picture shows a H&K USP 9mm. (00:58:40)
Other mistake: On the prison computer scan of Ernst Stavro Blofeld, Blofeld's date of birth is shown as 4th July 1946, but he is only meant to be a few years older than James Bond, as seen in the photo of them together as teenagers in the film Spectre. That photo is meant to be circa 1985, and the newspaper clipping (also shown in Spectre) about Franz Oberhauser's (aka Blofeld) death in the avalanche happened when he was 16 years old. If he was 16 in 1985, then he should have been born in 1969, not 1946.
Other mistake: After realising they can track the mother box, Batman says they have to go back to his base to use one of his satellites to track it, and they all do so. Which completely ignores the fact that Cyborg could easily access the satellite feed directly using his abilities and display it to the others on any nearby screen in Star Labs.
Suggested correction: Just because he had many options available to him, does not mean that the option which he chose was wrong.
Other mistake: The driver tells his partner that his firearm is empty, and he has no bullets in it. In the beginning he was given a loaner firearm until he could purchase his own. He's been with the company for a while now so that makes no sense. Also, for a trained professional who killed six robbers with precise accuracy it's hard to fathom he would not notice his gun weighing less. A loaded Glock 17 weighs 8.5 ounces heavier than an empty one. Plus the guards carry spare magazines, where are his? (01:20:00 - 01:22:30)
Other mistake: Black Widow and her sister steal a BMW. Getting away they damage the left rear quarter. A few cuts later they show the car again and it has no damage to the left rear quarter. (00:40:15)
Other mistake: Despite being a deadly marksman (only a few minutes earlier in the movie he stopped a bullet directed at him shooting it off the air), Bloodsport snipes several times at the huge kaiju featuring a massive eye in the central part of its body, and never once hits it. (01:51:45)
Other mistake: When the car stops and Chase is left on the curb the door is closed and it magically goes through him. (00:11:54)
Other mistake: Throughout the movie, the timeframe of Ikaris and Sersi's relationship seems to constantly change; their first kiss is in 575 BC, but Phastus in 2020 asks her how could she stand him for 5000 years. Sprite tells Dane that they broke up 100 years before, but he leaves her because he can't stand to keep secret from her the mission. Which is a problem, since he mentioned that Ajak told him that when they left Babylon, so around 500 BC.
Other mistake: Sandman AKA Flint Marko is the first of the villains to be changed back at the Statue of Liberty fight, and he is told by Peter to stay inside the head to be safe. Seconds later Electro discharges a massive electric surge onto the statue head, which is made of bronze, which is a good electric conductor. Marko should not have survived that. (01:47:40 - 01:48:10)
Suggested correction: It's made of a good conductor that would protect him like a faraday cage if anything. (Almost) all the energy would go through the metal, not the less conductive person.
A faraday cage is very sophisticated, calculated, engineering to block electromagnetic fields. You can't accidentally have a faraday cage.
Other mistake: Towards the end of the end credits there's a "Special thanks" sections, including sponsors such as Fiat Chrysler etc. The first person thanked is "Leslie Finaly", a misspelling of "Leslie Finlay." (02:22:30)
Other mistake: Jim's truck is shown parked in a space in front of the Border Patrol building, and the spaces have those cement barriers that keep vehicles from pulling in too far (in this case, yellow ones). Then when Jim later pulls out of the space, he puts the truck in "Drive" and goes forward with no consequence. (00:25:06 - 00:27:11)
Other mistake: In the scene with Harp facing the hostage takers between the 2 trucks full of GUMPs, Harp's rifle has no trigger. (01:04:00)
Other mistake: Rebecca electrocuted the giant sand worm within 3' of the spaceship. After Lt Astrid arrives, some views show Rebecca out in the open, but the camera should have been obstructed by the spaceship because following front views still show Rebecca next to the spaceship. Also, at least part of the dead giant sand worm probably should have been visible at times but was not. (00:51:55 - 00:52:20)
Other mistake: When the (impostor) Sheriff came into Rosie's Cafe, the Waitress said, "Deputy Myers" and asked him how he was doing. The Sheriff asked about (Aunt) Rosie, who the Waitress said went home sick. The Waitress offered the Sheriff some pastries and was talking to him for a while. (The conversation was not disclosed at that time.) The Waitress didn't give any indication that she did not know the Sheriff, but the Virtuoso later asked her how she couldn't know the Sheriff in such a small area. (00:34:01)
Other mistake: After Ken shoots the pregnant lady, she rolls her head to the side, apparently to indicate death, but her stomach movement shows she is still breathing. (00:01:46)
Other mistake: The crossbow arrow that went through Jamie's shoulder area had different positions/angles and was not always visible (in front or back) when it should have been. The crossbow arrow also did not seem to be long enough. It was not a mini crossbow arrow (3-4" where in front with maybe 5" in the back and a mini is only about 6.3" total); regular lengths are typically 14" - 20"+. (01:15:10 - 01:17:00)
Other mistake: Pierre bumps into Tae-ho and asks "Oh, how's Captain Jang? Beautiful as ever?" in French. Tae-ho then says "She asked me to tell you" in Korean, but the captions read [in English]. Pierre replies in French, to which Tae-ho replies "If you talk to her again, she'll kill you" in Korean, but the captions incorrectly say [in English] again. (00:15:50)
Other mistake: When Cole gets in to drive, he puts it in gear to drive, then starts driving in reverse. (00:22:50)
Other mistake: Kasady kills Dr. Pazzo hanging/strangling her with one of his tentacles coming from above. When you look at the section Frances was held in though, and considering the moderate speed the tentacles showed in their slithering while on camera, there's no way they could have reached her in time - that without mentioning the fact that Kasady himself appears inside the cell with no explanation - if he was already there by hacking, it does not explain the movement in foreground at the beginning of the scene.
Other mistake: Joshua kept on his thick leather gloves (with side stitching, adding width) while playing the piano yet didn't have any difficulty hitting the right keys. The added width to his fingers from this type of gloves should have interfered with his accuracy hitting the notes and keeping the tempo - the part of Chopin's "Nocturnes" he played was allegro (fast). (00:30:00 - 00:31:10)