@galaxy_2Alex
[media]The player it is affecting is the file that begins with "3a..."
It seems after I have left there is no playerdata file that will be read by the server and assigned to me. This is because the name of the file the server recognises as me has become a dat_old file for whatever reason.
@galaxy_2Alex
Yes, we are both using the same version of optifine.
Interestingly, I attempted to solve this issue by created a dedicated minecraft server and hosting it on our local network. However, when I leave the game and join back again my inventory and all player data is still reset.
Upon inspecting the player data files of the world the only thing I can consitsently see is: my player's dat file that should be loaded is always renamed to something not linked to the UUID I join with & a new empty dat file is there with the name linked to the UUID I connect with.
@galaxy_2Alex
I have been renaming to recover the data but often the corrupted files I should be renaming just aren't there at all and I have no way to recover the data