yes. I had two scenes with yissna and that temple one also with cera. And i am also on blackmail/rent path. I don't know what going on.
sounds like you took the same route i did. i am not really good at finding triggers. still have idea where isabelle's first trigger is. anyway im on good path and i have not got the threesome either. Just retried it with mida there and just rent no blackmail no good. so you might be right about Mida being as the problem. if you've started the blackmail route got temple and both library scenes plus rent scene.