Lee Unkrich posted these on twitter. Don’t think they’ve been shown before.
Aha, these are absolutely horrifying! These weren’t on a box set, were they? I know the original Toy Story’s render bugs were on the Toy Box Collection DVD set.
that kid looks possesded
Oh me gosh! Seems like computer renderings always mess up during production, eh? 
It looks like the walls and floors and ceiling had disappeared in that one pictutre with the sky and clouds…
I’m calling a catholic exorcist.