DeveloperError when using zoomIn function in 2D mode

[ghost]

When performing zoom-in in 2D mode, using the zoomIn() function, after a few calls to the function, a DeveloperError occurs.

for example, when using a button to call the following code in the Sandcastle:

function zoomIn(){
    viewer.scene.getCamera().controller.zoomIn();
}

after zooming a few times the program stopped working and gave me the next error:

An error occurred while rendering. Rendering has stopped.
DeveloperError: right must be greater than left.
Error
at new DeveloperError (http://cesiumjs.org/Cesium/Source/Core/DeveloperError.js:37:17)
at update (http://cesiumjs.org/Cesium/Source/Scene/OrthographicFrustum.js:107:23)
at OrthographicFrustum.getPixelSize (http://cesiumjs.org/Cesium/Source/Scene/OrthographicFrustum.js:295:9)
at UniformState.update (http://cesiumjs.org/Cesium/Source/Renderer/UniformState.js:263:40)
at Scene.render (http://cesiumjs.org/Cesium/Source/Scene/Scene.js:889:12)
at CesiumWidget.render (http://cesiumjs.org/Cesium/Source/Widgets/CesiumWidget/CesiumWidget.js:542:25)
at Viewer.render (http://cesiumjs.org/Cesium/Source/Widgets/Viewer/Viewer.js:701:28)
at render (http://cesiumjs.org/Cesium/Source/Widgets/Viewer/Viewer.js:69:28)

[mramato]

I can confirm this issue and was able to reproduce it with the below Sandcastle snippet. Just run the code and hit the Crash Me button to trigger the exception. CC @bagnell

require(['Cesium'], function(Cesium) {
    "use strict";

    var viewer = new Cesium.Viewer('cesiumContainer');
    viewer.extend(Cesium.viewerDynamicObjectMixin);
    viewer.sceneTransitioner.to2D();

    Sandcastle.addToolbarButton('Crash Me', function() {
        for(var i = 0; i < 500; i++){
            viewer.scene.getCamera().controller.zoomIn();
        }
    });

    Sandcastle.finishedLoading();
});