Problem with pathItem#getIntersections(path)

The following code should find two intersections in the overlapping paths, yet it finds zero:

```
var square = new Path.Rectangle([0, 0], [50, 50]); 
var circle = new Path.Circle(square.bounds.bottomRight, 25);
var locations = square.getIntersections(circle);
print(locations.length); // 0
```
