Inventory Items Unstackable by double click/tap

When there are multiple items in the players' inventory or in containers, double-tapping / double-clicking on 1 item does not automatically stack the other items into that inventory slot.

Expected outcome: The player is able to stack items in the inventory slot of the item where the player double tapped/clicked

Actual outcome: No actions/animations happen when double tapping/clicking items in the inventory or container.

Steps to reproduce:
-have several stackable items of the same type inside the players' inventory/ chest/container in separate inventory slots.
-select items that are not at maximum stack (example: less than 64 items).
-double tap/click the selected item to stack multiple items of the same type.