Revealing mistake: The "rain" moves with Nina, being heavier (or present) on which side of the screen she is on. Then there is no rain on the street when Nina is off-screen, but it is pouring behind her when she gets inside the building. (00:14:35)
Continuity mistake: Inside the building, Nina is at different distances from the man on the bench, ranging from about one body's width to a few widths away (while accounting for her limited movement). (00:15:15)
Revealing mistake: When Yaz and Nina are fleeing the men, the "car" has no visible structure (window frame/body) on the passenger side where Nina is sitting - it is all open "window". (00:38:00)
Continuity mistake: Beryl gags Nina's mouth with a white cloth that extends up to her nose and wraps her mouth with a tan cloth. Then only the tan cloth extends up to Nina's nose, and the white cloth is not visible. (Nina's arms are in restraints, so she cannot remove the white cloth.) (00:47:52 - 00:48:32)