Some times, my users are not able to login using facebook (FB plugin included in the core).
1. Facebook is logged in on other tab
2. Try to login to q2a by clicking FB-Login button
3. Pop-up will appear & disappear immediately. (Page doesn't refresh after that)
4. User is not logged-in
One work around (Doesn't work every time) is to open Facebook in another tab, logout & login through q2a.
Does anyone else facing same issue? Any solution for it?