Mangrove leaves can appear at a higher altitude when grown below y = 0

The Bug

when u put mangrove propagules in superflat they will sometimes grow with some of their leaves up (the leaves spawn on -2 Y)

Reproduce

• Create a superflat world
• Get a Mangrove propagule and Bone Meal
• Bone meal the mangrove propagule

Observed Result

Leaves appeared higher up then the tree

Expected Result

The leaves wouldn't appear that high up