sun, moon, stars, etc. flashing

Everything in the sky is appearing and disappearing rapidly. Not sure why. It looks creepy and I kinda enjoy it, but it's still a bug that someone may want to check out. It's just in one world with the seed 116243. Videos linked below.

https://www.youtube.com/watch?v=IfYp8GRiEAE

https://www.youtube.com/watch?v=9m9-vDyIZpY&t=2s