Other mistake: I know most goons in movies are bad shots, but this is stupid. There are at least 20 Bison Troops in the room. There is one Guile. The guards have machine guns, while Guile has a handgun, with only 1 or 2 clips. Yet these troopers all miss him, even the ones on higher levels of the base, which give them a far better view of Guile.
Street Fighter (1994)
1 other mistake - chronological order
Directed by: Steven E. de Souza
Starring: Jean-Claude Van Damme, Raul Julia, Ming-Na Wen, Damian Chapa, Kylie Minogue
Continuity mistake: When Vega ambushes Ryu in the locker rooms, he just puts his mask in front of his face. Ryu kicks him right afterwards, and the mask rests solidly on Vega's head.
More quotes from Street Fighter
Trivia: Here's a brief list of the moves from the game that made it into the film: Ryu threw a fireball at Vega. Ryu does a hurricane kick against Vega. Vega did his rolling attack against Ryu. Ken does the standing uppercut against Sagat. E. Honda does the hand slaps against Zangief. Balrog does the wind-up punch against a Bison Trooper. Guile did two Flash Kicks against Bison. Cammy did a thrust kick against a Bison Trooper. Chun Li does the spinning bird kick against Bison.
Answer: In his fight with the guard, Dhalsim gets knocked into some chemicals. This presumably changed him. This is also likely the explanation if he had to do any signature moves from the games, which thankfully, he doesn't.