Comment 2 for bug 1377968

This bug is the reason why in Vivid when a scope tries to authenticate to an online accounts, nothing happens: the OA trusted helper sees that the trusted session has succeeded (even if the initiator PID is the one from the scope, which has no UI), and decides to show its UI inside the trusted session.
But the trusted session is effectively non working, so nothing is shown on screen. The worse thing is that the OA process is not even aware of the failure (it thinks that its UI is visible and is waiting the user's input), so it's kind of hanging on that session to finish.