Larian Studios Forums Divinity: Original Sin 2 Divinity - Original Sin 2 - General Is Lucian's crypt pipe puzzle bugged?

I ran into the exact same problem and it took me way too many attempts to have the blessed blood reach the final bowl.
I blessed the blood on the grate and immediately restarted the console. It took a couple of attempts because the blessing wore off but I made it in the end.