[Webkit-unassigned] [Bug 242687] New: WebArchive can't be loaded anymore in Safari Technology Preview

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242687

            Bug ID: 242687
           Summary: WebArchive can't be loaded anymore in Safari
                    Technology Preview
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: All
                OS: macOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: crispygoti at gmail.com

Created attachment 460855

  --> https://bugs.webkit.org/attachment.cgi?id=460855&action=review

Webarchive of www.angular.io

Since iOS 16 Beta / Safari 16 opening WebArchives doesn't work correctly anymore. It looks like no JavaScript is executed anymore (or just script tags in the body tag?). This breaks all Angular based applications. 
This can be verified by opening Safari Technology Preview and by saving the official Angular website (https://angular.io) as a webarchive - after that just open the webarchive again. 
You'll notice that the website shows a few broken HTML elements - the application itself is completely broken. The same WebArchive works perfectly fine in the latest stable Safari (15.5). 

Our iOS app makes heavy use of WebArchives to improve performance of web content inside the app which is used by millions of users every day. I hope we can get this sorted out before the official iOS 16 Release.

An example webarchive is added as an attachment. It opens fine on Safari 15.5, doesn't work on Safari Technology Preview.

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