Unable to complete a ritual due to Scorpion boss.

I fought the Scorpion boss summoned from a summoning circle near a Ritual point.

After killing the boss and activating the ritual, the boss was re-summoned.

Upon the boss activating its ability to dive underground it simply stopped existing, its health bar disappeared and caused the ritual to be stuck and incomplete.

I ended up running to the edge of the Ritual after waiting for a bit and it somehow made the boss reappear.