'Google Sign In not working in facebook in app browser

We have a website with "Login with Google" feature. It works fine in chrome. However, when I share the link on Facebook, Facebook opens it in In-App browser and "Login with Google" doesn't work there.

I checked Stack Overflow's login with google functionality in facebook's In-App browser and it was working fine. Can anyone help me here? What are we missing?

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Solution 1:^[1]

This is Facebook In-App Browser You can code js:

<script>

var ua = navigator.userAgent || navigator.vendor || window.opera;

function isFacebookApp() {
    return (ua.indexOf("FBAN") > -1) || (ua.indexOf("FBAV") > -1);

}

if (isFacebookApp()) {
  if (!window.location.href.match('redirect_fb')) {
    // force open in browser ... 
  }
}

</script>

Sources

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Source: Stack Overflow

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Solution 1

'Google Sign In not working in facebook in app browser

Solution 1:[1]

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Solution 1:^[1]