Time: June 7, 2014 around 9:17am EST
Frequency: Always
World name: Hyperion
Character name: Haledire Nodire
Steps:
1) Fill a cross hotbar with action shortcuts (example: MRD cross hotbar 1)
2) Display an empty shared hotbar (example: shared cross hotbar 2)
3) Type /chotbar copy MRD 1 share 2
4) Error is returned: "share" is not a valid class/job

This was working up until patch 2.28 and was necessary for me to make a general class swap menu for my cross hotbar as well as a non-destructive combat setup menu for monk and dragoon.