Multiple times now - since the new patch where the card got changed - Shattered Reflection didn’t give me a copy of the minion I played it on in hand. Though I can’t be sure, the visual effect of the spell seemed to indicate that the copy of the card went into the opponent’s deck. Both times I noticed that, was when I played Shattered Reflection on an enemy minion.
Edit: It seems I was wrong in my first assesment, there is only a visual bug. The card does work properly.