The murdered judge is stated to have been getting into his Cadillac when he was shot, yet the re-creation shows a Jaguar Xj6.
The judge who was shot was named John H. Wood, not Robert Drews. If this was one of the names that was changed for this re-creation, it shows really poor imagination on the filmmakers' part, to choose a last name that was so like the first name of the story's main villain, Andrew "Drew" Thornton.
It is stated that Danny Yates "put the plane down in the waves", yet the footage of the crashed plane clearly shows it on dry land.
Obvious lack of imagination and poor set-preparation in the re-created scene where Frank Barclay is shown being positioned for a mug-shot --- unlike the previous scene where John Barclay is photographed while holding a "Barclay, John" placard, the ID placard for Frank Barclay contains just the last name "Barclay," (i.e., the first name "Frank" is missing), and the serial/case-number is clearly just a carelessly/crudely-performed re-arranging of the already-present number-digits on the same placard that John Barclay's re-creating actor had been previously holding: three of the number-sequences --- "1865890", "236", and "74" --- are identical on both placards; both of the "236" number-strings are located at the end of the ID-numbers, also. The only other difference is that John's placard-number contains an extra "6" at the very end. Obviously the placard was simply re-arranged in just a few merely-minor ways (i.e., the only changes were to move the "74" from the middle of the number-sequence to the beginning, and to remove the name "John" and the final "6" digit) between shots of the two men being photographed, and the changes were performed so hastily that the film-makers even forgot to add the name "Frank" to the placard after they'd removed the name "John".
The woman who enters Lee Shagra's office stops and stares when she's still just a few steps inside the door (at about timing-mark 43:35), long before she would have had a line of sight on the shoes sticking out behind the desk and thus known that Lee's dead body was there.