Other mistake: During the final Ice Palace action sequence, as Bond is getting into his Aston Martin just prior to his 'automotive duel', he crouches beside the invisible car in order to minimize himself as a target as he tried to locate the handle to open the door. The explanation given by "Q" was that tiny cameras on each side projects what's on the other side. Despite crouching behind his car, he still would have been visible on the other side. (01:33:00)
Other mistake: In the scene where Gustav Graves performs his skydiving publicity stunt, at landing Gustav fails to flare (i.e. bringing both toggles towards his groin) at an appropriate height to create enough lift and allow for a safer landing. He only appears to apply half brakes when he has nearly touched the ground. In reality Gustav would have seriously injured himself and the canopy would have traveled forwards towards the press not remained above him as shown in the scene. Also, it can be seen that Gustav has a harness attached to his legs, there is no way that he would have been able to detach himself from his parachute and walk so fluently after landing.