Android Studio 2.0: Why does Instant Run not work when modifying xml layout resources?

Question

This is a very new feature, as Android Studio 2.0 is only available in the canary release channel, however I was hoping someone could further explain how the Instant Run fea

Answer 1

Just a little hint. When I switched from Android Studio 1.5 to 2.0 (stable) the new Instant Run didn't work with layout changes. I tried Run > Clean and rerun app and I solved, since that moment Instant Run works.