I was soooo close to logging a bug about the busy indicator not showing up on UWP. Then I changed the background color of the navigation bar of my app to white, and there it was. Ridiculously small yes, but it is there (but only on a physical phone, not on desktop).
As I don't want my navigation bar to have a white background, I'm assuming I'll need to create a custom ProgressBarRenderer to get the ProgressBar to show up on phones.
However, my question is - should some form of busy indicator be visible on Windows 10 desktop running a UWP build? If so, where should it be / what should it look like?