No more half tiles- 2023

My sims can no longer fit through half tiles. It's astonishing how you would think instead of taking that feature away (from its original release in Tiny Living) when releasing the apartment expansion pack Sims 4 For Rent, you would elevate it and fix it; especially in the light of tight apartments. So respectfully, why is this happening? I cannot play a full 2 hours without getting frustrated at the game and giving up.