Adaptation Displacement: A more mild case; its generally an even split on which of the three most well known versions (novel, film, musical) someone is first exposed to.
Ending Fatigue: Molina is released on parole 3/4ths of the way through the movie. While arguably justified to show how Molina's changed and to provide the Downer Ending, it still feels too long. This was averted in the novel through the Genre Shift.
Ho Yay: Until Molina reveals he loves Valentin, making it explicit, the film is rife with this.