Random sources of light

Please do not mark unreleased versions as affected. You do not have access to this yet.

Please provide some screenshots.

As you can see there are 16 redstone torches originally, drop them in the hopper then there are 22 redstone torches

Yes this is the well known and already fixed hopper duplication bug MC-5998 and has nothing to do with this bug report.

Please delete those screenshots.

See in my attachment, there is no light source.

What attachment ?
There is a screenshot of my village, two false screenshots from someone else and a patch of green grass

The patch of grass is my attachment. Do you see the light coming from nowhere?

plonk

plink