In the chase scene involving Eddie Collins, the monkey, and the lion, there is a cutaway from one of the ship's officers jumping on a stool to the animals. When the cutback is made to the humans, they are in the same place physically, not having moved from their original positions in spite of being involved in a chase.
When Jimmy Chan (Sen Yung) is chasing after a suspect he accidentally trips over a cart knocking himself out. In the scene it is clearly a stunt double as we can see the stunt man's Caucasian face as he trips and falls.
When the Homicide Bureau phones that they have a murder, the policeman says the boat is located at "Kanea (Kah-ney-ah) Point". There is no "Kanea Point" in Oahu. He may have meant to say "Kaena (kah-ey-nah) Point" at the northern tip of the Island. However, as a non-Hawaiian, he may simply be mispronouncing the name as many non-Hawaiians do.