I create a czml by a .e file, which export from STK. No “orientation” section exists in this file. But when I load it into Cesium. And take the duck in Cesium Demo as model. I found the model is spinning. I put the czml as an attachment in this mail. After loading this czml, please speed up the timeline to 500X. Then you will see the spinning.
battlefield.czml (329 KB)