I have seen photographs of the tropical uniform worn by Lt Col B.K.Blount who was a member of SOE. His para wings are mounted above the right breast pocket, which I have never seen before. I have also seen pictures of other SOE personnel with para wings more conventionally worn above the left breast pocket. However, as in the case of WW2 SAS and early parachute regiment personnel mentioned above I think this practice was restricted to the early days of airborne formations, and certainly British para wings are nowadays always worn on the sleeve.
I understand the film was shot in South Africa. Do SA paras wear their wings on the breast, American style? If so that may explain the error