[FIXED] Sim walking through walls and objects (Patch 1.61)

I have this problem too! Or they will run trough the entire room before they stop. Or they'll go to the object, run trough the wall and grab the object, or perform the animation through the wall. Like picking up kids from the other side of the wall 😂🤔. It is pretty annoying indeed.

Hello! I'm sorry for bringing up an old topic. I recently started a new playthrough in the Sims 4, I started the game in San Myshuno City and noticed one Sim went right through my apartment, ignoring the walls and doors. Then another sim Mika Ojo hung around the sofa, and when she hung down she went to clean the toilet.
It was impossible to kick her out, since everyone knows perfectly well that you can only kick her out if another sim came to visit the game sim, and not when he got into the player’s home due to an incorrectly laid path.

 just recently started on a game I have played for well over a year.   I have no mods.   very few packs etc. loaded.  it began about the same time my infants started intermittently stretching in Growing Together.  have run repair on program 2x with no improvement

This has become much worse in my game since patch 1.78 and/or adding Horse Ranch. Sims and horses are walking through walls and each other. In a retail lot today there were customers and staff dancing the dance from Horse Ranch as if there were no walls. I managed to get an image of it happening.

Edit: I got an image of one of my horses walking into the kitchen through the wall too. 

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Occasionally (10% - 49%)
What is your current game version number? 1.99.305.1020
What expansions, game packs, and stuff packs do you have installed? Vampires, Strangerville, Spa Day, Seasons, Realm of Magic, Parenthood, Luxury Party Stuff, Island Living, Holiday Celebration Pack, High School Years, Get Together, Get To Work, Get Famous, Fitness Stuff, Dream Home Decorator Game Pack, DIscover University, Dine Out, Cool Kitchen Stuff, City Living, Cats & Dogs, Life of the Party Digital Content, and Up All Night Digital Content.
Steps: How can we find the bug ourselves? Invite Sims to any lot, and watch them walk around and well, through objects.
What happens when the bug occurs? NPC or active household Sims walk through objects that are supposed to be solid. An island countertop, for example. Or an entire fountain.
What do you expect to see? I expect the Sims to walk/move around the solid objects like they...normally...do.
Have you installed any customization with the game, e.g. Custom Content or Mods? Yes
Did this issue appear after a specific patch or change you made to your system? Neutral/Not Sure 

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Thank you for looking into this matter.

The bug is still happening.

Cat is sleeping with the head in the bowl.

How to stop Sims walking through objects?

I confirm, this is happening to me as well. Its seems like this is a routing issue, where sims are constantly using the same path at the same time, one will go through and the other one will kind of slow down, then turn almost on their self, and very slowly creep into the wall, then take their route again, once the odd wall thing happened. I think I would prefer seeing sims not slow down by that and just going through each other through a door for instance, if we have to choose lol.