Url interception is unreliable

When I open `uproxy.org/invite` urls on my Nexus 5 I don't get the menu to pick uProxy as the app.
Same is happening now with my dev phone. In fact, this stopped working before, and then it started working again, and now it's not working anymore. I'm not sure why.

This may helpmaking the url interception more robust: https://developer.android.com/training/app-links/index.html