When going to turn the clouds off it would just keep the clouds in my vision. 
It went away with relaunching but I tested it again and this still happened, reloging loads the world with the same effect.

Not sure if this is a client side bug or if its a bug with the snapshot but friends told me I should report it just in case.

Images and video of whats happening linked
I hope this helps.

Video (it was too big to add to the file list) - https://youtu.be/q8ruS-MPZvg