Google maps API V3 fitBounds() not working

Question

I'm want to call fitBounds() on a google map so that a user can see their own location relative to a selected marker/location.

Here is my function which handles this:

var fitMapToShowResult = function(index){
    var hereLatLng = new google.maps.LatLng (lat,lng); //location of the user defined outside this func
    var firstResultLatLng = new google.maps.LatLng(
                                $scope.searchResults[index].geometry.location.k,
                                $scope.searchResults[0].geometry.location.B
    );
    var latlngList = new Array( hereLatLng, firstResultLatLng ); // latlng: an array of instances of GLatLng
    var latlngbounds = new google.maps.LatLngBounds();
    for (var i=0;i<latlngList.length;i++){
       latlngbounds.extend(latlngList[i]);
       console.log('latlngbounds',latlngbounds);
    }
    //$scope.map.setCenter(latlngbounds.getCenter());
    $scope.map.fitBounds(latlngbounds); 

};

It works perfectly about 80% of the time. But roughly 1 in 5 times the marker is completely out of view and the zoom is way too high for the two points to ever be visible at the same time. What am I doing wrong?

It may be relevant that my map uses custom markers.

To assist with debugging, I added this code to draw the bounds on the map...

    rect = new google.maps.Rectangle( {bounds: latlngbounds, map: $scope.map} );

It always looks perfect for the first couple results:

But often it's incorrect: Notice that in each of the cases where it's incorrect, it appears that one of the dimensions of the rectangle (height/width) is correct, but the other is not. My gut tells me this is relevant.

Roundup of similar questions

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Answer 1

Don't use the values as geometry.location.**k**, it depends on minimized file (with some tool like MinifyJS) then it'll changes when google release a new versión.