Points all around the globe, plus two points at 0, 179.9 and 0,-179.9 (on each side of the meridian). Then, do a Cartesian Tier filter on a point right near those two. It will return all the points when it should just return those two.
The flawed logic is in the else clause below:
Basically, the Y and X values are transposed. This currently says go from longY (-180) all the way around to longX which is the lower left longitude of the box formed. Instead, it should go from the lower left long to -180.