When you are switching really fast between your Inventory (Hotkeys or Mouse scroll), it prevents you from hitting Mobs / Players for 1 Secound!
When you are switching really fast between your Inventory (Hotkeys or Mouse scroll), it prevents you from hitting Mobs / Players for 1 Secound!
I think, that's intended, since it would take some time for you to switch between weapons/items before you can use them.