Other mistake: Towards the end of the movie when Spencer is riding the motorcycle to the top of the jaguar statue, he throws the grappling hook and swings on the rope. When Martha hands him the jewel as she falls, the rope he was swinging on disappears.
Jumanji: Welcome to the Jungle (2017)
1 other mistake - chronological order
Directed by: Jake Kasdan
Starring: Dwayne Johnson, Bobby Cannavale, Karen Gillan, Missi Pyle
Factual error: In the 1996 sequence the kid is playing a PlayStation with DualShock controllers, those controllers weren't released until 1997.
Mouse Finbar: You better go in there and save her!
Dr. Smolder Bravestone: I'm not gonna get in there, you get in there!
Mouse Finbar: I got a backpack on! You don't get in water with a backpack, everybody knows that!
More trivia for Jumanji: Welcome to the Jungle
Question: Is the villain Russel Van Pelt the son or nephew of the hunter Van Pelt from the first movie?
Answer: The Van Pelt seen in the sequel is a 're-imagined' version of Van Pelt due to the fact that Jumanji has evolved to become a video game, rather than a board game.
Same character, alternate universe.