Sometimes a Gaia bug only shows up in User, not Engineer, builds.
How to get this to a debuggable state?
This works for me for 2.1 aurora builds. It might be wildly inaccurate by the time you read this ^_^
- Enable developer menu
- this recently changed; you have to go into Device information > more information, then scroll to the bottom
- Enable ADB and Devtools debugging inside Developer.
- Enable debugging of certified apps