[Webkit-unassigned] [Bug 196375] Safari (still) doesn't send Lax cookies after a cross-site redirection

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=196375

--- Comment #18 from Flávio Juvenal (fjsj) <flavio at vinta.com.br> ---
Created attachment 366289

  --> https://bugs.webkit.org/attachment.cgi?id=366289&action=review

iOS 12.2 in-app Safari Lax cookies issue

Chris, I've attached a video with the reproduction for the iOS-only problem. It only happens on GMail with in-app Safari browser.

I know that cookies aren't shared between Safari and GMail's webview, but the issue is that the webview doesn't seem to be able to set any Lax cookies.

The video above tests the site https://safari-samesite-issue.herokuapp.com/target/
which uses Lax cookies. Test with that link, it won't work. Afterwards, test with https://safari-issue-samesite-no-lax.herokuapp.com/target/, which doesn't use Lax cookies. It'll work.

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