iOS 14.7
Facebook app for iOS (version 328.0)
Date: 07/27/21
Description:
There's a strange problem that I have started noticing with Facebook's login authorization process when accessed via a Facebook login for account creation in an iOS app.
This does NOT happen with all apps. I just spotted this with Flipboard and Etsy - and I assume that it happens with some other apps.
This leaves the user stranded inside the Facebook iOS app - and is really bad end-user experience.
Take a look at Flipboard's "You previously logged in to Flipboard with Facebook" authorization screen. If the user cancels out of this page:
And then selects the "Cancel" option from this prompt:
The "Cancel" option in the upper left will disappear. This leaves the user...
Completely and totally stranded here. There doesn't appear to be any way to "Cancel" out of anything, and the user is forced to restart the Facebook app. This is a new problem, that I spotted with apps such as Flipboard and Etsy. I don't ever recall seeing this happen before.
Steps to Reproduce:
1. Have a Facebook account that has previously logged into Flipboard
2. Download and launch the Flipboard app (version 4.2.111)
3. Pick the three topics to follow and advance to the account login screen
4. Choose the "Continue with Facebook" prompt
5. From the "Flipboard wants to use Facebook" prompt select "Continue"
6. From the "Open in Facebook" prompt select "Open"
7. From the "You previously logged in" page select "Cancel"
8. From the "Facebook wants to open Flipboard" prompt select "Cancel"
9. Watch the "Cancel" in the upper left disappear
Result: The user gets trapped on a page after canceling out of a Facebook authorization prompt - user is stuck with the Facebook app being unresponsive, cannot exit from a white screen
Expected: User should not be trapped
Like I said: this seems to be happening with some apps - not all.
They will now sometimes be stranded!
