Steps to reproduce this issue:
Enable Vibrant Visuals from Main Menu.
Enter a world, go to any biome that has a defferent screen color.
While in a world, change Graphic Mode to Fancy.
Exit the world and go back to the Main Menu.
Enable Vibrant Visuals from Main Menu again.
Observe the panorama.
Expected result:
The color of the panorama would stay the same.
Actual result:
The color of the panorama has changed to the color of the biome that you are in before exit the world.
It also broke RTX