It is indeed only a small error, but not a fault of the copy I've seen in the cinema. It's a fault in the model of the Enterprise.
You can see it in these shots: there is light spilling through the hull above those four large light-stripes:
I'm not disputing there's an error but fwiw as a non graphics person I'm still not sure what bit of the images you're talking about: what with the debris the lens flares and the (intentionally introduced) imperfections it all looks like it was meant to me.
Which I s'pose is why it was let slip through - invisible to the masses, even in still form.