The bug
When grass is generated in the world with snow layers on top, it sometimes generates with "snowy:false", as shown in the screenshot. (This only happens in particular spots, like many other world generation glitches, so this might be related to older worldgen issues as well)
Snow layers appearing via weather also do not update the snowy value correctly. When placed manually by a player or a command, it correctly updates the grass block.
I think this might be a result of block state update code lost during the flattening? Not sure.
Linked issues
is duplicated by 25
Attachments
Comments 18
May be a reappearing issue; but will not be resolved as that as there’s almost 3.5 years between the fix and reappearance. Mojang also recently asked to not resolve things that appeared in new versions as duplicate of older-actually previously fixed-reports.
I can confirm this bug is still present, made a new world in 18w06a and the same issue spans over whole snow biomes:
[media][media]
Bacause that was a mistake with the model/block state file missing/having a wrong reference, this one is a problem with the block state itself, which are not related.
MC-140823, seemingly a duplicate of this bug, has 18w49a as its affected version, suggesting this bug isn't fixed. Reopen, please.
I'll reopen once the seed from MC-140823 has been provided and the issue has been reproduced in 18w49a.
Duplicate of MC-45528