Shift-Clicking Destroy Item button doesn't clear inventory

What I expected to happen

When you Shift-Click on the Destroy Item button in your inventory, Your inventory is cleared.

What happened

I shift-clicked on the Destroy Item button in 17w45a and my inventory was not cleared.

Steps to Reproduce

Get some items in your inventory in 17w45a and Shift-Click the Destroy Item button.
Your inventory will not be cleared

Notes

• Placing an item in the Destroy Item slot does remove the item though.
• Shift+Right-clicking works.
• Shift+Left-clicking works if there is an item in the cursor (that item will not be removed, but everything else will be). (Shift+right-clicking continues to work in this case)