Other mistake: When Ki-jung is making the fake diploma, the date she uses is June 16, 2018, indicating the movie takes place after then. In a later scene, when Yeon-kyo texts Ki-taek to meet in the sauna, the date on the text is June 12, despite being a later date. (00:11:20 - 00:44:40)
Other mistake: Whenever a cat puts a hat on, there are no cuts for the ears to pop through. Instead, the ears simply swap from being on the cat to being on the hat between frames. Sometimes, when the cat's head is a bit too high, the ears on the hat are sometimes slightly misplaced.
Other mistake: When the characters return to the real world, they all arrive at the same place at the same time, whereas in the previous movie "Jumanji: Welcome to the Jungle", it's established that the characters return to the real world at the point in time that they entered the game.
Other mistake: The Angels do a clean sweep of all the bad guys, tie them up and put their heads in bags. It's kind of a plot point that they have all the baddies perfectly packed up and ready for delivery. However when Bosley makes his entrance, there's a guy in the elevator he leaves behind, the door closes and nobody 'bags' and/or ties him up. He's just unaccounted for. (00:05:10)
Other mistake: The gun choreography in the fight at the Hound Dog just sucks. Nevada picks up the now zombiefied Albuquerque's gun, a Mini Draco AK with a (at most) a 10 round magazine, can barely hold it up but longarms it like a handgun and *brrr* fires at about double the guns actual fire rate. Infinite ammo, zero recoil (with a small stature woman firing 7.62x39 with one hand no stock) and the entire time she's shooting, the gun is pointing right at Tallahassee's head. (01:01:55)
Other mistake: Nick Spitz shows the flight attendant his shield to gain access to the first class cabin. The shield is an NYPD patrolman shield. However, Nick is later identified by another character as an NYPD sergeant. (01:24:10)
Other mistake: When Jenny and her friends are in the grocery store, they grab string cheese from a shelf that isn't refrigerated - it is just a random shelf and the cheese just stands out as so wrong.
Other mistake: When the characters go to the Himalayas, the whole time, like for 20 mins, including the confrontation scene, they are all wearing casual, short-sleeved shirts. You can see Mr. Burnish's henchmen wearing winter clothing, while the main characters don't freeze to death. They only start getting cold after a long time.
Other mistake: At the playground across from the school (Friday morning), Lily demands that the Good Boys give back the Molly pills. After Thor informs the other Good Boys that Molly is a "sex drug", Lucas screams to the girls, "You had us bring f-ing drugs to a playground? There are children here." Actually, Max was the one who told the girls to meet at that location. Max may not have been aware of the drugs, but he - more so than the girls - was responsible for picking the location. It is also noteworthy that Max and Hannah were neighbors. They could have easily agreed to make the drone-for-purse swap early that morning before going to school. Without Lucas, Thor, and Lily present, there would not be Lucas' concern that the girls might "trick or overpower" them. Max would have the drone back in place before his mother or sister noticed it was missing, he would not have to keep it safe all during the school day until he got home, and Lily would have her phone, driver's license, etc.
Other mistake: When the two women with the baby walk to the stroller, the one with a vest who does not believe in acting has her arm down her side in the first shot, folded with the hand on her belly in the second. It's also worth noting that the stroller is supposedly being pulled closer by the grappling hook, but the rope is not in tension. (00:12:00)