was running bpq with a friend when we noticed that our run was taking forever at first we thought it was just that rage was bugged with appo but after some more test it looks like wa buffs just don't work anymore my hero only has rage at lvl3 that's why there is almost no difference EDIT: to clarify the damage shown on my shad client is the real damage and the damage shown on my bm client is fake (only shows the client that used have the wa buff and not the damage send to the server)
I got scared too when I saw the Shaolin timer running out and realized I couldn't finish him off—since I usually sell that leech run. Luckily, I went solo today just to test things out with my BM and noticed I couldn't do it. I guess it's just like you said: the attack potions aren't working, or they're only working partially.
In conclusion, the client side shows that damage is buffed, however observering from other character shows server does not register the damage after player use wa pot. This might explains why there's massive smega in game asking if boss hp is buffed. Boss hp isn't buffed. it's the damage we saw on our client after wa pot is lying at the moment.