Vastweld is invincible.

The boss Vastweld, The Colossal Guardian becomes invincible, does not take damage.
I play on PS5 and it's happened twice. The first time in campaign I exit to character screen then came back and was able to hurt him after that. Now while mapping I cannot hurt him, I am stuck in battle with him as he's invincible and exiting to character screen wont fix it.

I have the same issue on the same platform right now.

I am using a Warbringer grenade build.

The funny part is that Wastweld also cannot hit me :)

So that is the end of the game for me for now.

It seems to be a bug with him being in the starting position around the arena, once he starts moving, he's damageable, at least for me. You may just need to let him rotate around before you're able to hit him.

Can we fix this please?! This is the most annoying fight now, he's invincible 3/4 of the time.