After deleteing a file/folder: pressing delete again deletes the selected file/folder as expected pressing right arrow causes it to skip a file/folder to the right pressing down causes selection to go down and to the right pressing left causes it to stay in the same location pressing up causes it to go up and to the right I run archlinux and atempted this in xfce and tried it on my friends computer who was running thunar in gnome at the time with the same results.
*** This bug has been marked as a duplicate of bug 7328 ***