When I compare documents, the initial screen I like showing the compared doc, original doc, & revised doc. Unfortunately, this layout goes away if I save and reopen, but that is not my problem.
My problem is that every time I scroll in the revised doc area it jumps to the end of the document. If I highlight to copy a section and it causes a scroll, it too jumps to the end.
Sometimes, if I scroll in the compared doc area, it too jumps to the end.
All jumps are always to the end.
How do I stop these seemingly unexplained jumps from happening?
Is this a "feature" designed to annoy? (It's working.)

Thanks for any assistance.