Reading through most of these replies, I've seen a couple of answers. one is Control panel > System and security > System > Advanced system settings (in upper-left side) > Advanced tab
> Settings in Performance box > Visual effects:
Another answer was to go into safe mode ... um, that is simply too much work.
In my scenario, I have three monitors (Desktop, not laptop). The Primary monitor is set to 4k, and the other two are at their native 1900x1080. The point here is that the primary monitor is set to a higher resolution different than the other two.
Going back to the issue. Do you experience this on any monitor other than the primary monitor? Are they of the same resolution?
My work around is, because I cannot do the above steps due to a security lockout by my security team, to open up the Word document on a monitor that is not the primary monitor. At which point, I do not get the "jiggly" document when scrolling. I can
then move the document between all screens and it scrolls just fine. If I open up Word on the primary monitor and move the document on a secondary one, then I do get the "jiggly" screen.
This also works on my Laptop with two external monitor scenarios.
Like everyone else, this recently started happening after the most recent update. I believe it might have something to do with the graphics performance and switching display modes, especially if you are in enhanced display mode where dynamic sizing
of objects on a higher resolution display, say 4k, appears as normal. When moving to the smaller display, Windows, Word in this case, is attempting to dynamically size the display to match the new, different monitor settings.
I'm sure this is also reflective of the different monitor types and drivers.
Perhaps someone can confirm this?