No, like I sad, I mostly ignored Yissna, so I didn't get the scene. I think I tried getting her in neutral root, but probably botched one of the dialogues and didn't get it. Either that or she needs more corruption while I've only given her love(3).
You are able to get Isabella on good path, but it's easier on neutral path.
For Cerea and Yisnna scene on latest version, you need to have had a previous scene with Yisnna in the library and you need to be on Cerea "Blackmail/rent" path, note that if you are on the "Blackmail/rent" path, you will miss the "Love path" scenes... Or something like that... 😅