Well, you know what, I’m playing with Vibrant Visuals and it looks like the sun is shining through a block where it shouldn’t. The generation looks unnatural
MCPE-228710
Vibrant Visuals: Sun shining through a block
Open
3
This issue can be quite significant in caves. Oftentimes whole sections of the underground cave will be lit up especially cave openings even though there’s no sun shining on the blocks. It looks to me like a rendering issue.