Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
for it not to flash black but as i increased the chunks it started to flash, i also tried to restart minecraft and delete it same with java and nothing still glitched out

What actually happened was...:
Describe what happened here
i created a new world and it started flashing black and the leaves and grass were glitchy changed the render distance to 2 and the sky went black

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...i just lauched a world and it happened hasnt stopped even in multyplayer so its a client side bug
3. ...