I thought this was already reported. Anyway it's still present in 1345 and only happens when sorting on the # column, sorting on other columns doesn't cause this problem.

1 In tracklist click Title
2 Click track #1 and SHIFT-click track #3
3 Click #

Expected: Selection remains on same tracks at changed positions
Observed: Selection is on different tracks and unchanged positions

Tracked at: http://www.ventismedia.com/mantis/view.php?id=7247