I would have said I don't know if what is shown in the log truly allows us to conclude that there is a bug with Lucky. That being said, if you received a reply saying it was a known bug, then it was indeed a bug.
As for whether this particular Halfling-related bug was reported on, I found
this,
this,
this,
this, and
that. The key is to search for "+lucky +halfling" with the Advanced Forum Search.
