[FIXED] Sims not visible to player teleport /abort interactions

I have the same problem and this is absolutely game breaking and needs a hotfix. Houses with multiple floors are unplayable.

I did some testings as well and yes, it looks like a stair problem combined with the camera controls. What i found out so far:
-- Sims only use stairs when your camera is either on them directly or on the same floor. This is the case for your own Sims as well as visitors / NPCs

-- If you have a 3-floor house and your camera is at the 1st floor, then Sims in the 2nd & 3rd floor will not use any stairs. It doesn't even matter if you give them orders or things to do, that seems not to be the issue, it's that they just can't use stairs

-- Doesn't matter if the stairs connect to a different floor or just to a low platform, it's ALL stairs & platforms (also low platforms that usually don't need a stair to walk across)

-- If your camera is not on the Sim or the same floor, Sims will just stand there in front of the stairs and don't move until you check on them / switch floors with the camera (you can see this if you Pause the game before switching floors with your camera)

-- Sometimes, if Sims have been stuck for a while (~2 minutes) they just teleport to where they wanted to go

-- It's possible that getting in & out of a pool has the same problem but i'm not sure about this, needs more testing. Might just be the pool ladder since it's technically a "stair"?

-- Deleting & rebuilding stairs doesn't help

-- In the patch notes it says something about a fix for stairs & platforms in basements, maybe something went wrong there.

I usually play my Sim in a big house and invite lots of people for houseparties etc. I know where the Sims / Visitors usually go and they use lots of objects on different floors but since the Patch the Sims won't do any of that and are pretty much non-existent, UNLESS you watch them with your camera.

I sent a sim on the ground floor to the ground floor toilet and she still wouldn't sit on the toilet and go unless I was watching, so that's not a stairs issue.

I have noticed it with toilets as well, and at that point I was so confused that I stopped replying in this thread, lolllll.  It seems to be an issue that affects multiple behaviors and makes large houses unplayable, or close to it.

I just came across this by accident, LOL. I was searching for something else and my own thread came up in the search results!

I am on a laptop with 17-inch screen.

Is it worth attempting any other repairs? I updated my antivirus (for possible graphics card updates, via windows) and I was wondering if attempting a second game repair would be worth it.

Or I can patiently wait for whatever fix I can only assume they're hard at work on.

(As an aside, what's confusing me hopelessly is that this isn't universal. How many people have replied here? Less than a dozen? In a world that made sense, at least in my head, this would either be getting hundreds of replies, or else maybe there's a deficit with MY system and there's something I can do about it here, on my end. I have no idea.)

@goofylittlerhino No, I don't think so, there's enough folks with this issue.

I'm was just thinking that maybe I'm not far enough off-screen when trying this and the bigger the screen, the less you see this ? But it's just a while guess

I don't think I can contribute much further on this topic. Needs to get fixed :D

There's 31 me toos now and rising. 

I don't mean to take up your time with it, and I'm sorry for that, but I am thankful for all the effort and kindness you've put forth.

In the meantime, you showed me a link about how the forum runs and one thing I drew from it was, "Stop being so gabby in the thread!" LOL, so I have been trying to respond less, and reply more concisely.

I am having this issue too. I'm playing on a new save repaired, no mods or anything. Only affects stairs for me right now. Makes the scientist career that I'm playing with unplayable.

Added information:

Haven't played in over a day.  Decided to see what would happen if I did.

I back up daily and I delete the localthumbcache.package before doing so.

I asked Caleb to come upstairs.  He did so normally!

But after that first attempt, with every succeeding attempt, he was back to delaying/teleporting/acting weird.

*Update*
In my first post i said that the problem was just "stairs" but as other players pointed out, it actually affects way more things. Sims not using toilets and other objects etc.

I also noticed that this probably affects some of the events in San Myshuno. Some Food Shops not spawning, Shop Vendors just standing around waiting for their shop to spawn.

And yeah, i wonder why there are not more people reporting this problem. I guess if you play in a small house and have most of it on your screen & don't use stairs much, you probably won't notice much of this glitch.