When i was testing a resource pack, i went under the void to see the bedrock texture.

But i noticed the screen went black when i was in the void.

I also noticed that the items in the creative inventory became completely dark, even the text.

I then noticed that the menu text also became dark.

I put the resource pack off and everything was still dark.

I then went to the main menu to check if it was also dark, and it was.

When i entered another world everything became normal again.

When i entered the world where i was under the void the darkness was back.

I then realized i also had night vision on.

I put the night vision off and it was back to normal.