Created attachment 4634 application menu Since an update of gdk-pixbuf from version 2.26.1 to 2.26.3 scaling of .xpm icons in the application menu is broken. I have also tested 2.26.4 with the same results. However I don't know whether this is xfce's or gdk-pixbuf's fault. For an idea on how it looks see attached images. All of the .xpm icons appear at their native resolution.
Created attachment 4635 right click application menu
Sorry, I just noticed there's already a bug report on this issue here: https://bugzilla.xfce.org/show_bug.cgi?id=9221
*** This bug has been marked as a duplicate of bug 9221 ***