[Webkit-unassigned] [Bug 220190] New: NSCrossWebsiteTrackingUsageDescription is not working on Mac, ITP is always enabled

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=220190

            Bug ID: 220190
           Summary: NSCrossWebsiteTrackingUsageDescription is not working
                    on Mac, ITP is always enabled
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebKit2
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dsaunders45459 at gmail.com

We use WKWebView for Mac, and with the Big Sur update ITP became enabled by default and is breaking valid auth scenarios that depend on cookies in an iframe. We would like to be able to disable ITP, but adding NSCrossWebsiteTrackingUsageDescription to the info.plist is not all that is necessary.  TCCAccessPreflight(getkTCCServiceWebKitIntelligentTrackingPrevention(), nullptr) check is also performed. For iOS this is controlled by a toggle in the application OS provided settings (defaults to ITP enabled), but on Mac there does not seem to be an equivalent. I have looked through UI and documentation but have not been able to find where a Mac user can allow third-party cookies after adding NSCrossWebsiteTrackingUsageDescription to the plist. We are not a browser application, but are required to use WKWebView to render web content due to app store policies. We would like control over this ITP setting in our app which is breaking compatibility.

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