Nameless Deity Despawns

I just beat the AoE and went ahead to try and kill it, since i didnt really feel like upgrading gear after Goozma.
Thing is that i can spawn it very well and the fight begins, but when it does the big beam shooting horizontally it just flies up and despawns as seen on the vid.
I searched up on reddit and one guy had the exact same problem and he fixed it by disabling the ambience mod, but the thing is that i didnt enable the ambience mod in any moment.
Loved the AoE fight btw, and ty for the help!

https://preview.redd.it/6enx9ru0xweh1.png?width=964&format=png&auto=webp&s=19dc3c3e17bbdcad5ba3692ba3f9e9e61d2c9d24

https://reddit.com/link/1v448ao/video/bjjou10zwweh1/player