[Webkit-unassigned] [Bug 188634] New: Custom element constructor doesn't use HTMLElement in new.target's realm

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=188634

            Bug ID: 188634
           Summary: Custom element constructor doesn't use HTMLElement in
                    new.target's realm
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: rniwa at webkit.org
                CC: cdumez at apple.com

When a custom element constructor invokes HTMLElement constructor of a different realm,
WebKit uses that realm's HTMLElement to construct the element instead of HTMLElement in new.target's realm.

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