I know this was done a long time ago, and I bet this is a highly unpopular opinion, but seriously...
It was cool to fix all the cheese associated with killing Drizzt, but when you can't even take him down with legitimate tactics because he freaking heals himself, that's just ridiculous.
As if it weren't gratuitous enough for the original developers to put him in the game to begin with, yeah let's make him even more ridiculously overpowered.
I get that I don't have to kill him, and most runs I don't (thus me not complaining about this until today!), but if I have him almost dead and he just heals ... no. Just no. It's anti-fun -- and it's a video game, it's supposed to be fun.
I've taken to CTRL+Y-ing him now in applicable runs.
Feel free to let me know how my opinion is objectively wrong.