The bug
Oak trees can generate right below the height limit (y = 256) resulting in incomplete trees. All other tree types refuse to generate if their highest position would be greater or equal to 256.
MC-117805
Oak trees can generate right below height limit (y = 256) resulting in incomplete tree
Resolved
Fixed
0
(Unassigned)
Confirmed
Low
Items
height-limit, oak, sapling, tree, tree-generation, y-coordinate
Minecraft 1.11.2, Minecraft 1.12 Pre-Release 5, Minecraft 1.12.2, Minecraft 18w07c, 1.14.4, , 1.15 Pre-release 3, 1.15, 1.15.2, 20w13b, 20w14a
20w17a
Retrieved
Confirmed in 1.14.4 and 19w36a when using the seed 3946212781147002616 and the coordinates -1183 251 -576 on an AMPLIFIED world.