Can't use Google based auth within Facebook webview

[moshe-moneytor]

[REQUIRED] Describe your environment

• Operating System version: Android
• Browser version: Facebook webview
• Firebase UI version: 6.0.1
• Firebase SDK version: 9.9.1

[REQUIRED] Describe the problem

Permission denied when trying to log in from a Facebook Webview

Steps to reproduce:

• Use a phone that has the Facebook app installed (not the Facebook website)
• Click on a link that displays the firebaseUI Google login button
• The Facebook Webview should open
• Try to log in by clicking on the "Connect with Google" button
• A message will appear that says permission denied since trying to log in from an unknown browser

[jhuleatt]

If anyone runs into this again, can you please provide screenshots?

Additionally, I believe the "unknown browser" message usually also says something about sending a verification email. Was there any more information on the "permission denied" page?

[ghk829]

I need to figure out how to solve this issue