Window > New Window does not update when original is worked on
Forgive me if I'm just not doing this right but I require a second view of my document open on my external monitor (I do this in Photoshop all the time - one close up, one zoomed out). I presumed the equivalent in Ai would be Window > New Window, and that does appear to open the same file in a second instance, but when I do anything on the original no changes whatsoever are seen on this other view.
Is this a bug, or has Illustrator literally just duplicated the file and this isn't how you view the same file in two windows at all?