I have a survival server with my friends, but every once in a while, the server will delete all progress since the last time the server was online. This is really annoying so as a temporary solution I use the command /save-all after each login, but I often forget to. Does anyone know why this is happening? The only plugin I have is CoreProtect. Another thing I noticed was that the server took a very long time to stop. If I click "stop" on the server panel, it takes about more than 20 minutes to save, but all my other servers take about 1 minute.