We recently faced this issue in one of our web resources (html). If we are trying to move the bottom scrollbar in the form, we get the below error in jscrpt.
This issue only occurred IE 8 and Update Rollup 15.
It worked properly in IE 9, 10, 11 and Update Rollup 15.
In one of the forums it was suggested that this issue will not occur if we only have UR 12. We tested it and found out that it did work properly in IE 8 with only Update Rollup 12.