when creating a new world, it'll glitch out and spam several different maps

when creating a new world, it'll glitch out and spam several different maps and won't actually load me into a world. I am still able to walk around and have to jump over invisible blocks that are glitching in and out and i can still die.
What i expected was for the game to load up a world.
What should've happened was i log into minecraft and launch the game. click single player and create a new world and wait for the map to load. the map loads and i can play.

What happened was after i create a world, i click create and it has the loading screen. When the game loads it spams and glitches several different maps at once and won't load or bring up just one. I can still walk around and die while the world glitches.

Steps to Reproduce:
1. launch the game
2. click single player
3. click create new world