If we could see the db we'd probably deduce that no 'magic' is required, just eliminating whatever is setting the focus to a field so far to the right that the form opens to a scrolled position. I know that setting focus to a record far enough down will cause a vertical scroll so I don't see how horizontal would be any different. Then again, I learn something every day!
So if you care to explore further, consider copying, compacting and zipping your file and posting it here for analysis.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.