Comment 2 for bug 1225771

Interesting observation is also that it depends on which workspace you are. It works properly if the left margin is an ``interior'' workspace boundary (i.e., there is another workspace to the left) but it does result in a (according to xwininfo) 11pt gap to the left margin in all left-most workspace!

Also, the same problem arises with alignment on the top. On top-most workspaces there will be a 10 pt gap to to top but it does work properly for other workspaces