Continuity mistake: When Lo Fong cuts off Chon Weng's ponytail, Chon turns and you can see he still has the ponytail.
Suggested correction: Not all of it was cut off.
Revealing mistake: When Roy and Chon are escaping from jail, Chon uses all his strength to bend one of the iron bars aside so that Roy can squeeze through. But, as Roy squeezes through, the iron bar behind him (which should be rigid) also visibly flexes, revealing that the bars are made of rubber or plastic tubing.