For no reason that I can find, my Minecraft worlds keep on resetting to the state they were in when I first created them; with no blocks that I placed or no farming that I've done.  I find it very strange because it's happened to three of my favorite Minecraft worlds I've ever played so far.  I believe that it might have a connection to a free map I've downloaded right before this activity started.  It is called "Glitch Runner: Endless parkour."  I've deleted the resource pack in my files, and I'm trying to find the map itself in there as well to see if the problem is then resolved.  But so far, I've had no luck and I'm afraid to play any of my worlds because I don't want them to be reset like the rest.