Watchlist add fails with “Authentication Required” despite being logged in via Google OAuth (mobile)
Summary
When I try to add an item to my watchlist, a dialog appears saying authentication is required, even though I’m already logged in via Google sign-in.
Message shown
Authentication Required
Please log in to add items to your watchlist.
Expected behavior
As a logged-in user, I should be able to add items to my watchlist without being prompted to log in again.
Actual behavior
A dialog blocks the action and requests login again.
Steps to reproduce
- Open the site/app on a phone.
- Log in using Google.
- Navigate to any page with an “Add to watchlist” (or similar) action.
- Tap Add to watchlist.
- Observe the Authentication Required dialog.
Environment
- Device: Xiaomi 17 Pro
- OS: Android
- Logged in via: Google OAuth
Frequency
Notes
This may be related to how mobile browsers/webviews handle session cookies after OAuth (e.g., third-party cookie restrictions, SameSite settings, or the login session not being shared with the watchlist endpoint).
Watchlist add fails with “Authentication Required” despite being logged in via Google OAuth (mobile)
Summary
When I try to add an item to my watchlist, a dialog appears saying authentication is required, even though I’m already logged in via Google sign-in.
Message shown
Expected behavior
As a logged-in user, I should be able to add items to my watchlist without being prompted to log in again.
Actual behavior
A dialog blocks the action and requests login again.
Steps to reproduce
Environment
Frequency
Notes
This may be related to how mobile browsers/webviews handle session cookies after OAuth (e.g., third-party cookie restrictions, SameSite settings, or the login session not being shared with the watchlist endpoint).