Bad news is that no one has a solution for getting rid of it. I'm not sure if this will block you from all content tho. But it might.. As i recall Kira will ask about progress with Ann and how the sleepovers are working. This is when she tells Max to get a porn movie and thats needed for progress. But as i said.. Not sure you are blocked because the option may apear later. I have tried to locate this bug on my playthroughs but somehow magically avoided this. There is an option to answer the sleepover question a lot earlier in the game and i think i did that so i never got the bug later.
Well, I don't know if those sleepovers (introduced with 0.9 or 0.10) are locked behind new content of the later updates. I just know I had an erotic movie evening with mom where I talked about her opinion about lesbian relationships and got green light for Alice/Kate.
Indeed Kira suggested buying and wathc it /w mom together. I have those evenings and she's giving me handjobs and blowjobs. I progressed even that far, that Alice and me got caught on the couch by mom and vice versa Alice caught Mom and me on the couch. That'S all
In terms of sleepover I can only peek or leave and now on Mo/Thu where mom is working I can only leave her bedroom while max is thinking "should I go into her room or let her rest?"