Chunks not loading after respawn

Hey there Mojang, I was testing a few things out in the new snapshot, as it was my first time playing in that version and I noticed I was in some cave testing stuff and was far from my spawn point so I just killed myself in lava but when I respawned, none of the chunks were loading and it looked like I was really high in the sky and my weapon cooldown wasn't moving up. I hope you get this fixed, Thanks!