The wormhole crash happens on any server, whether I create it or not. I've replicated it at least 10 times. Also, yesterday the game crashed on a dedicated server when I was standing by the portal and someone else joined the game.
I've even tried deleting the game from storage and redownloading. I still have my saved games and items after that, so I'm wondering if something specific about that cloud/cached data is the culprit. I'd rather not delete it for debugging purposes as I would lose all my items, but if other people aren't seeing these problems, I'm not sure what else it could be.