In Rotom's base form, at the end of every battle, the top move is constantly being replaced with Thunder Shock. I have tested this on a fresh copy of 13.5.7, and it consistently happens after every battle. Not a coder, but I'm assuming that something is checking for what form the Rotom is in, and ensuring that it always has the corresponding move, even though the way it works in the main games is that it only over rights with the corresponding move upon changing forms, not after every battle. Makes it annoying to use Rotom in its base form as Thunder Shock is outclassed as soon as you get Shock Wave. Embedded images are before and after a fight.
