If you shift + left click on stacked pumpkins in inventory you are able to wear more than 1 pumpkin

If you shift + right click on stacked pumpkins in inventory you are able to wear more than 1 pumpkin

What I expected to happen was...:
I should be able to wear one pumpkin

What actually happened was...:
All 3 pumpkins were in the slot

Steps to Reproduce:
1. Get some pumpkins in one slot
2. SHift + left click it