Which ones exactly? I got a few dialogues of her calling my My love in act 3, and even got the ending with her too when I finished the game. I think you get the least bugs if you just straight up destroy the grove with her, and then try to max out her approval in act 2, so you get in to act 3 with a very high approval.
I did exactly what you said. Straight up destroyed the grove, maximised approval in act 2 and act 3. No others romances at all. And got just one new dialogue "mindsharing" in act 2.
Seems like you're just lucky one to not meet these bugs.
People say the easiest way to check flags working correctly is to visit drow twins in act 3. So included them under spoiler because in my case they are not working.
I didn't get these
