None of the skins I checked showed it on the right. Added as: http://www.ventismedia.com/mantis/view.php?id=7139

the most of my MM3 skins have right side align Sort glyph in headers and displays correct in MM3.
i made also several skins for MM4 and until build 1343 they displays on right side/correct,
( we can defined where the Sort glyph displays right or left ,but don't work's in 1343 )

Do you have a test case to confirm (although checking several skins they all have it on the left)?

Sort glyph in headers have wrong align ,
if defined with right align it shows with left align!