My BP has two hides, one on the cool side(~80 degrees) and one on the warm side(~90 degrees) and spends most of her time in the cool side hide, so staying on the side opposite the UTH can be normal.

If you only have one hide(thats what it sounds like) and the snake doesn't use it, then yes that is weird, as my snake spends 99% of the daytime in her hide.