Device Designer Causing Crash

When I open the device designer, initially it seems to work fine. However once I save a design, if During another session I open that device and try to access the designer, it crashes every single time.

I’m using an iPad Air 2 with the latest iOS and a windows 10 pro pc.

Sorry for the inconvenience. We are working on an update . Best

Do you guys have any idea when the device designer might be ready to go?