Continuity mistake: When Bond jumps from the roof of the warehouse in Kobe both his shirt cuffs are outside his jacket sleeves. He starts correcting the right cuff, then there is a cut to the next scene and here he is still correcting his right cuff, but his left cuff is now inside the jacket sleeve.
Continuity mistake: In the scene where Bond is taken to Osato chemicals by the hired thug, right after the thug takes off his mask and they start to fight, the mask falls off onto the couch Bond was laying on, but when the thug goes to flip Bond onto the orange rug, the mask is now lying on the floor next to the couch, then afterwards (when Bond goes to pick up his trusty Walther PPK after setting off the alarm) the mask is lying on the couch again. (00:24:30 - 00:27:40)
Plot hole: If a fake burial at sea and a picture in the newspaper was enough to convince Bond's enemies that he was dead, was it really necessary to have him shot at in the bed at the beginning? We learn later that the girl he was with was part of the fake death (and probably the gunmen too) so couldn't Bond's people have just started with the newspaper and burial at sea to begin with rather than risking his life in the process?
Factual error: The room where Bond cracks the safe to steal some documents, there is a solid automatic door to enter the room. However right next to it, the wall is thin as paper (Japanese Shoji paper). It makes no sense to put a safe in a room like this or secure it with such a solid door when burglars just can walk through the walls. It's not armored milk glass or similar - during Bond's fight with the Japanese driver he already smashed one of these "walls" inside the room.
Other mistake: At the beginning of the movie James Bond is on a submarine underwater in Hong Kong harbor. Then, he is launched from a torpedo tube and is in Tokyo shortly afterwards. It's 1,800 miles from Hong Kong to Tokyo.
Factual error: When Bond is hiding on the monorail cart, it stops at the astronauts' quarters. After Bond gets out of the cart, a second cart passes by, even though the cart he arrived in is still on the track (out of shot). No one moved the cart before the second cart passed through.
Continuity mistake: When Bond takes the first sip of his martini at Henderson's place, the glass is about half full. You can see the level of the martini in the glass is below his finger. In the next clip there is more in the glass. The level is now above his finger, much closer to the rim.
Continuity mistake: During the scene where James Bond is running along the rooftop of Kobe Docks the camera pans away to give an arial view. 007 fights off the bad guys and rounds a stairwell opening with the door open. As the camera picks him up from ground level, or at least roof top level it shows James Bond opening the door before going through.
Continuity mistake: In the scene where Bond first arrives in Japan and is walking down the street, he passes by a woman (Aki) looking at something behind a store window, she is holding a small gold purse with a smooth gold band around the part that opens, but after she opens it and the shot shows a close up of the concealed mic inside, the gold band is now rough and twisted. (00:15:40)
Continuity mistake: At the end of the film, Blofeld is about to kill Bond and he kills the Japanese man. Watch carefully as the cat gets down and crouches next to the Japanese man. The next shot of the man, and the cat's gone.