I made a new save, had the Sim purchase the same house (Strangerville, Plateau Place; using freerealestate cheat), and built a pond in the corner, just like the first Sim (both had problems with pathing when it came to taking a bath, despite having enough depth for the "Bathe in Water" button being clicked on (it wasn't greyed out due to the water being too shallow or the the water being frozen).
With the pond, I had to use the Wade in Water/Play in Water to find a spot where when I click on the Bathe in Water button it would actually work rather than have the pathing warning pop up.
But it had no problem with either taking dishes to a sink or putting the garbage away.
I made a third save, made a teen Sim like the first one, and made a pond (which also had been finicky in using it too). There was no problem with the dishes. But there was another thing the first Sim had the other two did not have, Vampirism.
I had the Sim be turned into a Vampire when Vlad came by, just like I did with the first Sim.
At first there was no problem, until there was a spoilt drink on the bar I put into the dining room, alongside a book. I clicked on the button to Clean Up the glass, and the Sim would pick it up and then place it down again. I tried it again, and it did the same thing.
I tried to move it to the sink, but it wouldn't let me. I tried to pick up the book to put it away (I put a mushroom table bookshelf in the living room, so it's not like it's on another floor, so it should have been taken to the bookshelf. The Sim would pick it up, and then put it down again.
Then I saw a book lying in front of the bookshelf, so I had the Sim put it away, and it worked. The Sim was then able to put the book on the bar away. After the Sim did that, it was able to take the glass to the sink that was in the middle of the main floor of the house.
The next game day was another thing. The Sim was taking care of a guest toddler, and cleaned the potty. The sim held up a garbage bag and put it onto the floor, even if the garbage can in the kitchen was empty (Empty Garbage was greyed out), but the option to Rummage the Garbage was available to click on.
The only way it would be picked up to be taken to the garbage can was when I moved it closer to garbage can, in front of the corridor that goes from the living room to the back of the house with the kitchen attached to that corridor. Then the Sim picked up the bag and put it into the garbage can.
I'd previously placed a bathtub in the first floor washroom, next to the toilet that I'd moved next to it. There was a puddle on the floor in front of the toilet, and when I tried to mop up the puddle or take a bath (hygiene level was in the red), the Sim would quickly stop that action. At least not until I was able to remove the garbage bag from the room.
When I tried to take the garbage out, there was a message over the Empty Garbage button stating there wasn't an outdoor garbage bin (I keep on forgetting to put on in, it's something this house should have from the start when it's bought).
After I moved the garbage from the bathroom, the Sim was able to wash the puddle on the ground. The Sim wasn't able to take a bath, until the puddle was cleaned up first.
So I set it up in the front of the house, but the Sim would only pick up the bag from the can only to put it down again, with the pathing symbol and raised hands.
I'm going to go back to the second Sim, and make a few saves where I remove the Fairy molecule and have him be turned into a Vampire, as second save where I just swap out the Fairy to make him a Vampire in CAS, and a third one with aging him down to a teen.
(Hmm, I just wanted to check something before switching back to the second sim, I was going to try to move the garbage on the floor to the outside bin, since the Sim was having pathing problems. I could not drag it from the spot it was on the ground, like I was able to do in the bathroom. It stayed on the ground. But clicking on it would bring up the Throw Away button to put it back into the garbage can.)