I was making a portal themed resource pack, with pumpkins being cores. It appears that the top stays facing one direction and doesn't rotate with the rest. It seems to be a model bug.
MC-55145
Pumpkin top textures don't rotate depending on direction
Resolved
Fixed
0
Confirmed
Minecraft 14w19a, Minecraft 14w20b, Minecraft 14w21b
Minecraft 14w25a
Retrieved
Broken resource pack? Please switch to the default resource pack, and see if it occurs there.