There are multiple times as myself or from what I have seen from other players where Kon's bubble does not much anyone away instantly but instead their body sort of hesitates which gives them time to grapple or strike. I've seen people, like Doldren, also grapple through a bubble as of today.
Loaht's Cookie ammo is not registering stagger/push all of the time. I've seen multiple NPCs just walk through it like it was nothing and I've seen multiple players just grapple through it without being interrupted.
