For example: 32 porkchop is held in off hand, while 32 porkchop is in inventory. Pressing F on the porkchop in the inventory does not stack with the 32 porkchop in off hand. Instead, they switch.
MC-194111
Swapping The Same Type of Items Between Off Hand and Inventory Do Not Stack
Resolved
Works As Intended
0
This is intentional based on the name of the keybinding in the Controls menu.