[BH] Tiny pink outline lines appearing while building

After Royalty and Legacy came out, I decided to make one of my families from an existing save file live in Ondarion. I built the shell of a normal residential lot on the empty lot in Verdemar, but after I used the Move Lot function, every room of the lot had a pink outline. I know the outlines usually show up if you're working with a residential rental or a business lot, but the lot I'm building is just a normal residential lot, and I don't even own the Businesses and Hobbies pack, so I'm not sure why this is happening. I can't press [O] to get rid of them like I usually would on a residential rental because that's not the lot type I'm using, and switching to a different type of lot and going back to residential is only a brief fix.

I tested this in a few other worlds besides Ondarion to see if the issue exists for all lots, but it seems that this is only happening in the neighborhoods of Ondarion (I tested it in Bellacorde and Dambele too with the same result). I've also checked for this on other save files and even removed my entire Mods folder and started a vanilla save file to see if the issue persisted, and it did. I've already repaired my game and tried to move lots in the new world with and without mods, and the pink outlines are still there. I'm not sure what to do about this.

Edit By crinrict: Added pack tag to title.