Empty maps bug in 1.13.1

I'm in search of an ocean monument. For that im trading with cartographer villagers, trying to unlock the explorer map to make my research easier. Whenever I trade a normal map with him (I believe is the second or third trade) and i put it in my hotbar, a lag starts in my world, but not an fps lag, is like you had a very poor connection to a server. Anyway, every entity doesn't move, the blocks I mine don't appear and I have to relog the world. When I open it again, I don't have the emeralds I have traded with that particular villager, they reset to the very first one. Also, when I open the map, it shows a very weird image, that you can see in the screenshot below.