[GAMEPLAY BUG] Nami W against Braum Shield

So while in game playing as braum, I have noticed a lot of times that whenever I went against a nami, whenever she used her W on my while Braums Unbreakable is facing the direction, it does not get destroyed and goes back to heal nami/her ally. Is this intended? Because Braum's Unbreakable states that all projectiles that come into contact with his shield get destroyed . So the bug is: Nami's W does not get destroyed by Braum's Unbreakable and instead reflects off of him and acts as normal