Why is my Sim angry from pleasing Decor - bug?

Has your Sim perchance painted an Angry emotion painting that you kept and hung on the wall? The only reason I ask is because of the Expressionistic reward trait. I believe that comes with the Painter Extraordinaire aspiration. If so, that could be why your Sim is angry. You would've had to activate the aura on the painting though. Just a thought... :)