I have noticed that some of Niis nsfw animations are just the rub animation, Climax and pullout are either broken or i'm assuming work in progress?
It's a work in progress, you shouldn't be able to see them though, as you cannot collect enough Affection to get them.
If you got enough affection to see them it can be considered a bug. Were those unlocked from the first time you got the scene?
Nope after I cleared some the first wave of plants when you have the option of waiting till later and continuing on it unlocked the rest of the scenes which I thought was strange.
I'll take a look into it, thanks!