Potential Polygon Bug?

[AlextheYounga]

I'm trying to test if a point is inside a polygon and I'm wondering if I have found an issue or perhaps I've misread the docs. Would really appreciate your help here. I included a couple of dump and die's to show that my code appears to be correct. Thanks ahead of time.

     use Geokit\Polygon;
     use Geokit\Position;

    $polygon = new Polygon(
            new Position(125.2, 5512),
            new Position(136.6, 5512),
            new Position(139.7, 3880),
            new Position(139.7, 3307),
            new Position(129.9, 3307),
            new Position(122, 4409),
        );
        $envelope = $polygon->close();
     dd($polygon);
     //Output
        array:7 [
        0 => Geokit\Position^ {#36
            -x: 125.2
            -y: 5512.0
        }
        1 => Geokit\Position^ {#1282
            -x: 136.6
            -y: 5512.0
        }
        2 => Geokit\Position^ {#1289
            -x: 139.7
            -y: 3880.0
        }
        3 => Geokit\Position^ {#1290
            -x: 139.7
            -y: 3307.0
        }
        4 => Geokit\Position^ {#1291
            -x: 129.9
            -y: 3307.0
        }
        5 => Geokit\Position^ {#1292
            -x: 122.0
            -y: 4409.0
        }
        6 => Geokit\Position^ {#1293
            -x: 125.2
            -y: 5512.0
        }
        ]

    $point =  new Position(125.98652772609, 5374.0);
     dd($point)
    //Output
     Geokit\Position^ {#1295
       -x: 125.98652772609
       -y: 5374.0
     }
     //This point should appear inside the $envelope.
     //I've tested this in Excel as well 
     //as a Javascript geometric package to make sure.

     $envelope->contains($point);
     //false