Capture Crashes when Saving Shapes

I was happy to learn that Adobe Capture could be used to create vector shapes; however, the app is very unstable and is unable to complete this basic task.

On tapping, save, a dialog opens and and a blue wheel spins briefly before the entire app crashes.

The Bitmap image I'm working with is A4 size and it is semi-complex but noting that should crash an app — not in my humble experience. 

Please resolve this bug.