Continuity mistake: When about to question Leon, Holden asks him "Please don't move." When he does, his right arm is up and he points at Leon for a moment. It then cuts to a close up of the VK and suddenly his right arm is down in front working on the VK. The folding black flap things on the VK are also suddenly up and moving where they were not in the previous shot.
Other mistake: Just before Leon's questioning starts, Holden turns on the VK and the eye monitor censor piece flips out. There is a view from Holden's perspective showing Leon's eye in on the screen, meaning the eye piece has already zoomed in on Leon's eye. Then just after Leon says "Care if I talk?" it cuts to a side angle as he says "I'm kind of nervous when I take tests." This view shows Leon is looking towards the wall at a 90 degree angle away from the VK, meaning the view screen and eye piece could not have been seeing his eye at a frontal view as show in the previous shot.
Continuity mistake: As Deckard is setting up the VK to test Rachel, one shot shows him adjusting the eye piece with his thumb as she asks if she can smoke. The view from behind his hand shows his thumb up towards the top of the eye piece. But then the film cuts to a view of the other side and Deckard's thumb is now towards the middle of the eye piece.
Audio problem: There is a part in the original version's audio that was changed for the Director's Cut. When Bryant tells Deckard that there are "5 Skin-jobs" walking the streets. It was changed to "4 skin-jobs." However, the change can be heard, the sound of Bryant's voice is noticeably different in the new dubbed line than in any other point during him speaking. The change is jarring and very noticeable. It almost sounds like a totally different person saying the line. This has been fixed in the final cut but exists in all other versions.