The fact that it is on the theatrical cut too, that it creates a continuity error, and because it's just a repeated shot from moments earlier.What makes you think it's an error? From that Trek Core article, it sounds as if it was a deliberate alteration made my Nicholas Meyer, just like the deletion of the two lines in the turbo shaft.
And I don't agree that TrekCore implies it's an intentional change.
[...]from the Kobayashi Maru simulation that opens the film – an apparent editing error in the early moments of the movie.[...]it seems that the editing team on the remaster may have accidentally re-used the same over-the-shoulder shot from before the Kobayashi Maru was even detected.