Player Heads do not stack

[calebeden]

Custom player heads currently only stack to size 1, while the mob heads in the game stack up to 64.

[calebeden]

This is intentional behavior for now due to an armor duplication glitch. Likely no good way to fix this until Mojang patches it in the base game.

[calebeden]

This can be fixed if Mojang resolves MCPE-159736 which is the armor duplication glitch this add-on currently has to work around. Please vote for this issue so that this add-on issue can also be resolved.