Comment 7 for bug 1416526

Not sure what you mean. The behavior I describe above -- open and close footnote with no intervening actions -- preserves page position exactly in calibre 2.40. Not to mention that there have not been any changes to viewer code in a long time.

If you want to look at the code, look at viewer/main.py (footnote_visibility_changed)

Closing as this works for me. But feel free to re-open if I have misunderstood what you meant.