When this occurs I can resolve it by completely shutting down the Minecraft client (on PC). Simply exiting the game world and reloading does not resolve it.
It looks as though when the tree is spawning its selecting from the entire random list of spawned trees and not just the different height, normal, leafy trees.
When this occurs I can resolve it by completely shutting down the Minecraft client (on PC). Simply exiting the game world and reloading does not resolve it.