NPC Sim invades home - inconclusive Cause (Patch 1.110)

Hello, Another very irritated player here too. 

I have For Rent, but don't use the apartment lots due to so many bugs. So, I am playing a couple in SanMyshuno. After some time my Sim asked his girlfriend to move in, he proposed to her... just a few moments ago in fact. It was  during an intimate evening in his home and this townie shows up out of no where and starts joining on their moment. Totally ruined the whole moment!

This townie was NOT invited, the doors were locked. I even have the door set to stop solicitation and vampires. None of this apparently works any more. I even noticed when my sim was sleeping in their apartment that random townies will just walk through walls into these apartments and vanish out of walls again on the other side of the apartment. And they're not even ghosts. But sure do act like one.

I tried to use the testing cheats to remove this townie as there is no option to ask to leave. Epic fail there. I even tried moving my sims from that lot to another lot altogether and then back again to reset things that way and that stupid townie is still there! I put a lot of thought in creating that home for them and now they can't even live in it thanks to this new expansion which I don't even own and all the crappy updates is making our games worse than ever before. 

Additionally I don't use any mods either. So, this is ALL on EA. 

EA better fix this one real quick!!!!! And as for wanting to buy this new expansion they can forget it. It is already causing more problems than it is worth to our games and some of us don't even own them. What a mess!