Bug in the code which decides which apps to select for swapping.
Due to the way in which Adapters and ListViews work together to provide
"header" and "footer" functionalities for lists, there is a mismatch between
the index in our original adapter, and the actual index on the list. It is
up to us to maintain this correctly, which was not done, hence the off by
one error.
7fb2de4bae