One square of my lot renders anything placed on it "blocked."

Product: The Sims 4
Platform:PC
Which language are you playing the game in? English
How often does the bug occur? Every time (100%)
What is your current game version number? 1.62.67.1020
What expansions, game packs, and stuff packs do you have installed? Get to Work, Get Together, City Living, Cats & Dogs, Seasons, Get Famous, Island Living Outdoor Retreat, Spa Day, Dine Out, Vampires, Jungle Adventure, Parenthood, Realm of Magic Perfect Patio, Cool Kitchen, Movie Hangout, Romantic Garden, Backyard, Bowling Night, Fitness, Toddler, Laundry Day, My First Pet, Tiny Living, Holiday
Steps: How can we find the bug ourselves? I honestly don't know.
What happens when the bug occurs? One square of my lot renders anything placed there unusable due to a blocked spot.
What do you expect to see? ...I just want to use the space again normally.
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? No

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Halfway through cooking a meal in a kitchen I have been using for several days, my Sim started acting like he had no counter space to cook. He has cooked probably 50 meals in this kitchen and I have not changed anything in it since the last meal he cooked, the counter space is empty. Through experimenting, I have found that it's just that one square of the lot that renders any item placed there unusable due to being "blocked" - Sim lifts his arm and waves it around and acts like he can't get there. If I place the stove on it, he can't use the stove - blocked. If I put the tea machine there, he can't use the tea machine - blocked. It's that square, not specific to the items in it. I have deleted and replaced every item I tried to place there. I removed all clutter, windows, paintings, hangings, ceiling lights, and there's no pot rack. I deleted any foliage from the outside of the house, nothing was glitching through the wall. If I move the counter/fridge/stove/whatever else half a square away from the wall, he can use it, but if its against the wall - blocked.

I've seen multiple threads on the issue of a counter being unusable before that ended up being items in the way etc. and I have taken all the steps on those threads. I deleted my cache and repaired the game, I even saved the lot to my gallery, bulldozed, and re-placed it. Nada. That square is just completely unable to be interacted with by my sim. Blocked.

I removed all mods and it is still occurring.

ETA: The only thing I can think of that might have caused this is that he did a "change outfit" mid-meal cook.