After creating for the first time a world in the newest minecraft Snapshot 21w10a with the seed 4375352071010570690 at 4:00 AM GMT -3, i found an incredible world with just one problem, there is and specific location where is Night forever (Screenshot_862).

Cannot Re-create check "(IMPORTANT)"

after messing around with it noticed 2 things

#1 - There is the usual Minecraft Darkness glitch where everything within that area is pitch black, and can be fixed by putting a torch and taking it out (Screenshot_867)

#2 - The game acts like the area within the Darkness is either Night or have something above it making it unable to burn mobs and creates glitched Shadows

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With those things in mind i though that there could be bad generated blocks above the area so i started using /tp MyName ~ 100+ ~, after messing around with it i found out the Pitch black appears at exactly 8300-Y axis, if you stay at 8302(Character height) it will not turn black as if we were in a cave, but at 8301 (legs in the 8300) we turn black as if the shadow in the area is glitched. (Screenshot_868 / Screenshot_869)

#Addendum - the 8300 darkness bug fixed it self after sometime and turned from 8302/8300 to 110/109 in the Y axis, bug still with the darkness glitch and mobs not burning inside the area

#There is a couple of other chunks around the are with the same glitch

#Coordinates 1300 480
#an darkened area "fixed itself", appears like it's day but mobs still don't burn inside of it (Screenshot_870/Screenshot_871)

#enemies within the area don't burn (Screenshot_863/864)

(IMPORTANT) - Upon re-joining the world the bug fixed itself, mobs within the area started burning again, cannot re-create the bug by re-creating the world.

After trying to re-create the world all of the Videos attached happened at around the same location, also fixed upon re-joining (after re-creating i immediately teleported to
X1300 Y100 Z500

#Screenshot_875 was the game during the videos

Nothing happened at a third Re-Creation

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