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Facebook in-app browser (on both iOS and Android) not working

See original GitHub issue

We are seeing issues with the polyfill not appropriately filling inside the Facebook in-app browser.

This seems like it may be a regression on #561

Reproduction:

https://m.facebook.com/story.php?story_fbid=10154490930306508&id=739196507

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">

    <title>FB Browser Window setImmediate repro</title>

    <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=default,setImmediate"></script>
</head>

<body>
    <script type="text/javascript">
        setImmediate( function() {
            alert( 'setImmediate worked' );
        } );
    </script>
<body>

Issue Analytics

State:
Created 7 years ago
Comments:9 (6 by maintainers)

Top GitHub Comments

1reaction

triblondoncommented, Mar 8, 2017

OK, I think the solution to this is to remove the Facebook-added [FB_IAB/FB4A;FBAV/35.0.0.48.273;] token from the UA string before parsing. This will then cause the UA to be recognised as Chrome on Android, and Safari on iOS. I’d like to do this after https://github.com/Financial-Times/polyfill-service/pull/1050 is merged.

0reactions

triblondoncommented, Mar 27, 2017

See #1147