Pressing number key while crafting no longer places result in occupied hotbar slot

When you are crafting something and use a hotbarkey to place the crafted item in that slot, when that slot is already occupied by an item (lets name that, "old" item) I am unable to replace the "old" item with the crafted one, I am only able to place it in empty slots.

Thank you for your time and I'm sorry if this was already posted.

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Steps to reproduce:

• Place valid recipe contents in crafting grid
• in 1.8.9
  • Pressing hotbarkey of item same as crafted item will add the item to the hotbar
  • Pressing hotbarkey other item as crafted item will swap empty hotbar slot with occupied and place crafted item to the hotbar
  • Pressing hotbarkey on empty slot places item there
• in 1.9-pre4
  • Pressing hotbarkey of item same as crafted item will add the item to the hotbar (No longer works)
  • Pressing hotbarkey other item as crafted item will swap empty hotbar slot with occupied and place crafted item to the hotbar (No longer works)
  • Pressing hotbarkey on empty slot places item there (Still working)