chunks are not loading, game is crashing...

I created a new creative world. I wanted to find a village so I used a /locate command. The game teleported me to village, but chunks around the village was not loading.

Also villagers were "death". They were just standing there and not talking. I was not able to trade with them and not even push them.

Also chat was not working anymore. I was able to write in chat but the text was not saved after pushing enter.

I flew a bit from the village. Suddenly I was not able to move and I only sow the sun, moon and stars. I couldn't even die in void.

So I decided to leave the game. When I did that, the game crashed. I deleted that world and created a new one but this time I didn't want to use the locate commands anymore. So I tried to find a village by just flying around.

After a while the game stopped loading chunks and I was not able to go back where I started either. I left the game and game crashed again.