Crowbell boss fight 2nd phase bug

Crowbell bugged out during second phase (where you fight it at the entrance in the narrow spot).

It ran away in the 1st phase after reaching HP threshold. I waited a bit before pursuing it, but when I found it a the entrance, it just stood there, doing nothing. No reaction to me hitting it as well.

Eventually after 2nd threshold was reached, it became invulnerable and continued to stay there doing nothing. So I was locked out in this tiny arena, since Crowbell never crushed the entrance.

Reloading at the checkpoint got me out and 2nd attempt went as intended.

Corrupted Nexus
Crowbell boss bugged out at entrance for me. but he still can move and attack.
unable to reset to last checkpoint. GGG please fix.