OSX 10.13.5, Illustrator 22.1.

When I have two windows open on the same document and start editing text, the inactive window will recenter its view on wherever my text cursor is.

Reproduction:

1. Open a new document
2. Draw something off on the side of it
3. Zoom in on this thing
4. view>new window
5. arrange both windows so you can see them at once
6. recenter the new window far away from the thing you drew in step 2
7. in the window that's not showing the thing you drew in step 2 make a new text box, or create a new point type object
8. start typing stuff
9. observe that the inactive window has changed its view to center on the text

This drives me crazy when I have pasted the script for a page of comics into the side of one document, and am trying to rework it into a series of word balloons scattered about the page.