The bug
Some places produce illogical shadows:
1.Strange shadows are created when placing blocks in the middle of a U-shaped structure.
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2.The fence arm in this structure is unusually dark.
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3.When the block is on the east or south of the wall.
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4.Strange shadows at the end of the fluid. Fixed in 1.17-pre2
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Linked issues
is duplicated by 2
relates to 5
MC-71767
Smooth lighting no longer works properly in certain other block configurations
Open
MC-104532
Water makes complete shadow on block
Reopened
MC-262396
Light glitch on most recent snapshot (23w18a)
Resolved
MC-94331
Tripwire wrong black rendering
Resolved
MC-301577
Block light sources produce shadows around themselves under skylight
Resolved
Attachments
Comments 13
Walls, fences, glass, slabs and stairs don't seem to be affected anymore, but solid blocks, cobwebs, transparent blocks (such as the beacon, leaves (depending on your graphics) and the honey block seem to be affected) and also the blocks that emit light are. (As of 1.16.1/20w28a)
3 more comments
Removed some screenshots that cannot be reproduced in 18w03b.