This is me with stairs. When going up or down stairs, I always have to get off them on my left foot. Can’t make the final step with my right foot at all. That’s bad.
I’m not diagnosed as anything but…whenever I walk on side walks or any ‘slab of concrete’ tupe walkway, I imagine diagonal lines from corner to corner like An X for each slab. I can’t step on the X part. I can step on the outline of the slab. That’s fine. Just not the diagonals. There’s no consequence for getting it wrong But it’s a minor compulsion.
And here I was thinking I was the only one that is bothered by the bisecting angles. Except I can’t step on the outlines unless it lands between my heel and toes where my feet wouldn’t touch them.