the cursor will be positioned top left of page, you know, about 1" or 1.25" down from the top of the page--as I look at the monitor. Then another time it will be (again looking at the monitor) still at the left of the page, but now at the very top of the page.
The printed result (on the printer paper) always starts where it should--about 1-1.25 down from the top edge.
My son in Germany writes (when I asked him): "Yes and if you can bloody find out how to fix it, I would be very grateful. I have this problem fairly often although not always and it bugs me, but I have no idea how to fix it! I do that by accessing "View > Show Header" and closing it; it puts it back right, but that's a damn nuisance.
Has someone a permanent fix?