I open a .doc document. It has an image (animated) inside the text.
When you scroll down the display (the text +image goes up), at a particular
line, always the same, the image continues to go up if you stop the scrolling or
faster than the text if you continue scrolling, then looks like touching the top
and comes down to the right place, then goes up again, in an endless process,
like a yoyo.
If you scroll one more line, then the text below the image follows the image
upwards, line by line. when the image comes down the phenomenom restarts.
If you go down to the bottom, the display is OK, but when you scroll up towards
the top, the image is still going up and down with the text attached below.
It looks like that it is the line of text which is in regard of the "lift" which
is  pulled by the image below it.
The phenomenom occurs if you scoll with the lift or with the up and down keys.
I can provide the file which shows the defect. I didn't find on this page where
to attach a file. Sorry for that.
I could reproduce the defect with a file created by OO 3.0 (.odt), by
incorporating the animated image.