Rendering problem with transparent video

Reported on the forum: https://groups.google.com/forum/?hl=en#!topic/cesium-dev/BHXRoSzPHnk

The transparent parts of the video don’t clear when the video loops

var viewer = new Cesium.Viewer('cesiumContainer', {showRenderLoopErrors : false});

var videoElement = document.createElement('video');
videoElement.style.display = 'none';
videoElement.setAttribute('autoplay', '');
videoElement.setAttribute('loop', '');
videoElement.setAttribute('crossorigin', '');
videoElement.setAttribute('controls', '');
var src = document.createElement('source');
src.setAttribute('src', 'https://examples.phaser.io/assets/video/alpha-webm.webm');
src.setAttribute('type', 'video/webm');
videoElement.appendChild(src);
document.body.appendChild(videoElement);

var sphere = viewer.entities.add({
    position : Cesium.Cartesian3.fromDegrees(-79, 39, 1000),
    ellipsoid : {
        radii : new Cesium.Cartesian3(1000, 1000, 1000),
        material : new Cesium.ImageMaterialProperty({
            image: videoElement,
            transparent: true
        })
    }
});

viewer.trackedEntity = sphere;

[hpinkos]

Appears to be fixed

[cesium-concierge]

Congratulations on closing the issue! I found these Cesium forum links in the comments above:

https://groups.google.com/forum/?hl=en#!topic/cesium-dev/BHXRoSzPHnk

If this issue affects any of these threads, please post a comment like the following:

The issue at https://github.com/AnalyticalGraphicsInc/cesium/issues/4935 has just been closed and may resolve your issue. Look for the change in the next stable release of Cesium or get it now in the master branch on GitHub https://github.com/AnalyticalGraphicsInc/cesium.