Villager Trading Issues.

When i try trading with  Villager, Cartographers especially, the first two trades work fine. However, when i get to the third trade (Empty map trade) the emeralds are traded and i get given the map but the next trade isn't unlocked. When i relog / restart my game and i load back in, sometimes i get the emeralds i had just traded back in my inventory, but other times i still have the map and the trade still isn't unlocked.I have tried this on multiple Cartographers to see if it was just a bug with the first one i tried but this seems to be an issue with all of the Cartographers in my village. EXP orbs are also floating not allowing me to pick them up off of the ground.