[Webkit-unassigned] [Bug 136590] New: Doing a navigation on a non-opaque WKWebView can result in an empty layer tree

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136590

           Summary: Doing a navigation on a non-opaque WKWebView can
                    result in an empty layer tree
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: WebKit2
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: thorton at apple.com


FrameView::setTransparent uses FrameView::renderView to get the RenderView from the Document, but setTransparent can be called from Frame::createView, which is before the new Document has been swapped in, so it gets the old (pre-navigation) RenderView, and uses that to schedule a compositing layer update, which eventually comes through and can blow away the new document's layer tree.

rdar://problem/18234000

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