microsoftTeams.getContext doesn't invoke the callback when opening the auth flow from desktop Teams app

[kafka-yu]

I'm working on an app for Teams, on the desktop version of Teams, when opening the auth window, it will open the auth-start page in separated window in system's browser. And then the microsoftTeams.getContext doesn't invoke the callback function.
Any ideas?

Uncaught Error: This call is not allowed in the 'authentication' context
FailedToOpenWindow