I have used keepinventory on my vanilla Minecraft server for about 18 months and it has been set to "true" for most of this time. The latest update seems to have set it to "False" - I have reset it to "true", but every time I restart the server, it sets back to "False". This is the same whether cheats are enabled, or if I have completely re-copied the files from a new download. I cannot get past this and it seems to only be this one setting that won't save after a restart.

Server is hosted on Windows 11, fully patched