Armour sounds don't play when you click and drag items to their equip slots. They only play when you right click them from hotbar.

Put the summary of the bug you're having here

What I expected to happen was...:
It would play the sound when I clicked and dragged the armour into the armour slot. (Note that this is NOT right clicking it when it is in the hot bar. I am talking about click and drag to equip).

What actually happened was...:
The sound didn't play.

Steps to Reproduce:
1. Get armour.
2. Put it in your inventory.
3. Without right clicking to equip it, click and drag the armour to a slot.