Book Browser issue

[Siggy15]

When double-clicking on an item in the book browser near the top or bottom of the pane, the list scrolls to center the item, and sometimes the item gets dragged to a new location in the list. It seems to be related to the timing of a double-click, and it happens a lot, and can go unnoticed, resulting in multiple pages out of order. I just found several more pages out of order from this. The solution should be simple: the list should never move itself, only the user should be able to make the browser list move.