I would say it would be "what happened to all of chip's "brothers and sisters" at the end of Beauty and the Beast"?. It's my favourite disney film, but this still bugs me. :(
Mean-spirited characters not getting any form of punishment. If Robbie is not over Wendy's breakup, and wants revenge on Dipper, I would not mind waiting until 2017, or the dia Gravity Falls ends to see what happens to Robbie.
