Deliberate mistake: When the gangs meet in the toilets to set a date for the brawl, the mirror on the left is the only one opaque, most surely to avoid reflections of the filming crew.
West Side Story (2021)
1 deliberate mistake - chronological order
Directed by: Steven Spielberg
Starring: Ansel Elgort, Ariana DeBose, Rachel Zegler
Continuity mistake: When Riff tosses cans at Tony, Tony's right arm is raised. A shot later it's lowered.
Diesel: Hey, I'm depraved on account of I'm deprived.
Question: Does Maria die at the end of West Side Story?
Answer: No, she doesn't, but Tony is shot and killed.