[Webkit-unassigned] [Bug 167012] New: Can't fullscreen element if parent element is already fullscreen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=167012

            Bug ID: 167012
           Summary: Can't fullscreen element if parent element is already
                    fullscreen
    Classification: Unclassified
           Product: WebKit
           Version: Safari 10
          Hardware: Macintosh
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Platform
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: alokedesai at google.com

Created attachment 298774
  --> https://bugs.webkit.org/attachment.cgi?id=298774&action=review
Simple repro case

If a document's body is fullscreen, a child iFrame can't go fullscreen (even though it has the correct allowfullscreen/webkitallowfullscreen attributes). This seems to contradict the WHATWG fullscreen API as any descendant element should be able to go fullscreen if a parent element is already fullscreen. This is works as intended in both Chrome and Firefox.

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