Warren Wearth keeping positive sanity aura when turned into beardling

I thought it was strange that the Warren Wreath still keeps its positive sanity aura even when it turns into a Beardling. It doesn't make sense since Beardlings have a -40 per minute insanity aura. Not sure if intended or oversight, but I think the sanity aura should be reversed when sanity is low. Since this item is targeted towards new players, perhaps it should give no sanity when in Beardling state instead of -1.2.