Creative mode cow milking / mushroom stewing inconsistent with picking up placed fluids

The bug

When using a bucket in creative mode to pick up a fluid from within the world, a maximum of one (1) buckets appear in the inventory. However, milking cows does not have a limit on the amount of buckets / bowls provided, which does not seem consistent.

If a bucket of milk / bowl of mushroom stew is already present within the creative player's inventory, any subsequent milking of a cow should either just not give a milk bucket / mushroom stew to be consistent, or milking should be denied outright (i.e. no hand animation nor sound plays).