Using forwardExtrapolationType in CZML

I have the following CZML example where I’m trying to get the model and the billboard to stay aligned in its last orientation before it becomes undefined. The spec says that InterpolatableProperty is supported but maybe it just doesn’t work the way I’m expecting? In the example the model and billboard will snap orientation at the end of the last position timestamp. I am able to get position forwardExtrapolationType to work as expected as the position just holds after the last timestamp.

Hi @Kevin_Ten_Eyck ,
Thanks for your post and apologies for the slow response.

Are you able to provide sample code using our sandcastle tool that reproduces your issue https://sandcastle.cesium.com/

That will be very helpful for using helping us investigate and debug.

Best,
Luke