OIDExternalUserAgentIOS not run in main tread

[jaroshevskii]

Describe the bug
presentationAnchorForWebAuthenticationSession, -[UIView window] must be used from main thread only

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Tap on '....'
3. Scroll down to '....'
4. See error

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
If applicable, add screenshots to help explain your problem.

Environment

• Device: MacBook Pro 2019
• OS: macOS 15
• Browser: embedded iOS app popup browser

Additional context

[brnnmrls]

Hey! Feel free to submit a bug this bug to https://github.com/openid/AppAuth-iOS/issues as it seems like it'd be relevant to AppAuth. In any case, I took a look and did not come across this warning. Is this happening when you open the DaysUntilBirthday sample app perhaps or is this your own app?

[vg-identance]

Found same issue. @jaroshevskii make sure you call GIDSignIn.sharedInstance.signIn(... from main thread. Interesting thing that nested await calls don't guarantee to be on Main as first one.