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Spawned buttons won't land on any surface

/setblock cannot set the orientation of chests, furnaces, dispensers, and droppers

Inconsistent bottom face behavior

Projectiles emitted from the face / head

Can place block-dependent blocks on glassy blocks or leaves

Vines can't be placed below non-solid blocks / get deleted by doing so

Endermen become hostile when looking at their waist instead of their face.

Endermen stop moving, if you look at their face even when they're already in hostile mode