[MC-73100] Potions are no longer stackable using command.

In new version (1.8) potions are no longer stackable using command blocks. I'm creating a map, and it destroys most things!

One screen is on 1.7, another on 1.8

Linked issues

WAI: MC-3444. You can still use /replaceitem to stack potions, I believe.

Maybe, but then I must change all commands, in every classes. :/ And I don't know how give item on next slot. Just fix this, it will be easier. 🙂