when you throw a throwing weapon from spartan weaponry that has the returning enchantment, if you are holding right click when it returns it will shoot out another projectile immediately

This should be fixed in the latest update (3/20)

If not, please reopen

I have tested this in a server too - do note that the throwing weapon may play a re-equip animation after the projectile has returned - this is just visual and another projectile does not actually shoot