NPC Sim invades home - inconclusive Cause (Patch 1.110)

Hello,

I have For Rent, but don't use the apartment lots due to so many bugs. So, I am playing a couple of single Sims I created in San Myshuno. 

After some time my male Sim asked his girlfriend to move in with him. Not long after, they moved into another apartment I spent quite a bit of time creating for them. Tonight, he proposed to her... just a few moments ago in fact. It was  during an intimate evening in their new home in an apartment in San Myshuno and this townie shows up out of no where and starts joining their moment by waving and standing there watching. 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 sims were sleeping in their apartments that random townies will just walk or run 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 did all of these plus removed all Caches to no avail. So.... now this story is shot. 

I put a lot of thought in creating that home for them and building up their story and now they can't even live in that apartment or have the story line I created thanks to this new expansion pack 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. 

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!