Not sured if you've already fixed it, but it seems that unlocked features overwrite each others slots. I had Breastfeeding, Pegging and Futa unlocked, and when I selected Breastfeeding it played the Futa scene instead which wasn't listed despite being unlocked. I tried scrolling down the list to see more options, but it couldn't be scrolled down.
Viewing post in Married Life With A Lamia 1.1E comments
There is a lot conditional switch check when the scene selection happen, but its probably just a wrong switch activation if you unlock some extra content in that tier it will be solved probably. i look into it and fix it later, my next project demo release plan eating away all my free time right now :/