Is this a bug or expected behavior?

[Mike Bonner]

Make a stack, put a button on it.  In the script of the button put "set the
width of group 1 of me to random(the width of this card)

Apply, and click the button.  The button width changes despite being
directed at a group that doesn't exist.

Is this expected behavior, or should I report it as a bug?  It behaves the
same no matter what figmentary object you reference before "of me".
Apparently of me trumps all? Tested in 6.6.2 and 7.0.5