So, is it a bug that I cannot split a stack of antivenoms (and no, it's not a single potion with multiple uses, it's a stack of potions)? Rightclick gives no split option. Maybe because rightclick is blocked when you're not poisoned?
Or is there a another way to split stacks that works for antivenom potions as well, and is there no bug?
I'll wait with posting on the bugtracker until someone can confirm this a bug or not.