After setting two breakpoints as shown in the screenshot, I clicked on the example plugin only to find that the debugger is ignoring these breakpoints. Why is this happening? Could it be because the initialization code of the Jetpack plugin is not debuggable?
This issue seems to be somewhat related to Why the addone button is lost when I enable panel code?. I set these breakpoints to understand what is contained in require("sdk/panel").data.
Debugging from the add-on manager