Hello. One day I was playing in my minecraft, a normal world of survival. I had already won several achievements, as they are easy to win (the first). So I quit the game because I was tired. I went to play again the other day and the achievements were all reset, no achievements were made, but my world was completely complete, just the achievements that are gone. So I tried to reinstall minecraft, and the bug continued. So I deleted all the folders and reinstalled again. The bug continued! Please help me!