Household members turning into neighbors/ Can't use doors (1.112.519/2.06)

While playing my sims in his own house, the game suddendly considers him as neighbor. He then can't go inside the house if not invited and has its own will just like a neighbor. My sims suddendly decide to recycle the dragon fruits I was planning to sell :'( 

The sims is Knox from Eco lifestyle. He is married to another sims I created and they live in the neighborhood. I don't know if it's important but I though maybe the game sometimes forget he moved.

I don't have any CC or Mods in game.

Thank you for your help