Hello Izanami,
Welcome to Microsoft Q&A forum.
That is a weird behavior on a game, especially online games like Sea of Thieves. Before we proceed, I'd like to ask a few questions to better understand the situation.
- Did you uninstall the game in the time that you don't play it? Usually uninstalling the game and reinstalling it will force the computer to download the latest version.
- May I know if you have any similar issue with other games?
I'm waiting for your reply.