As of 6.11 the reaper-menu.ini file is being sorted incorrectly.
The item_nnn identifier at the beginning of each line is being sorted by alpha instead of by number. While internally in REAPER it still works, this causes problems for anyone who has written software that expects the reaper-menu.ini file to be ordered the way it has always been ordered.
So instead of sorting 0,1,2,3,4 ... it sorts 0,1,10,11,12,...