[Webkit-unassigned] [Bug 236227] New: Cookies set with sameSite=None are not sent on cross domain requests

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236227

            Bug ID: 236227
           Summary: Cookies set with sameSite=None are not sent on cross
                    domain requests
           Product: WebKit
           Version: Safari 15
          Hardware: Mac (Apple Silicon)
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tmpduarte at gmail.com

Created attachment 451077

  --> https://bugs.webkit.org/attachment.cgi?id=451077&action=review

Subsequent request cookies after the cookie has been set

I'm developing a react web app, and since I updated my Safari to v15 it stoped sending cookies with `sameSite=None` to different domains.

In particular, while I'm developing using localhost and sending requests to a remote server, the cookie is not sent.

The cookie is set like this:
```
Set-Cookie: _staging_app_key=XYZ.XYZXYZXYZXYZ; path=/; expires=Tue, 08 Feb 2022 11:40:36 GMT; max-age=86400; secure; HttpOnly; SameSite=None
```

But it is never sent in subsequent requests

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