Incompatible with Combat Nouveau

[exhaust-pipe]

Fabric 1.21.1 , all mods are latest.
Combat Nouveau increases potion stack size to 16 , and when I pour potion into the brewing cauldron, all of the potions in my hand are consumed, and the cauldron only receives one of them.
Perhaps all mods that increase potion stack size will have the same issue.

[InputandOutput]

Yeah, any mod allows potion stacking results in the same issue, since the modpack I'm playing does not have Combat Nouveau to have stackable potions. I wonder what kind of logic is the brewing cauldron is using when it comes to potion stacks.