The bug
Ocelots are spawning atop of jungle trees on the jungle leaves.
How to reproduce
Seed: 1615269218
Coordinates: -4003 94 503 or -4003 95 503
MC-169760
Ocelots spawning on jungle leaves
Resolved
Works As Intended
2
(Unassigned)
Confirmed
Mob spawning
Jungle, Ocelots, jungle-tree, jungle_leaves
1.15.1
Retrieved
The code explicitly allows it, and this has been the case since their additions. Jungles are so full of leaves both high and low that only spawning on grass blocks would make them insanely rare to find. Realistically you'd need to cut down part of the jungle to get them to spawn then...