[Webkit-unassigned] [Bug 108302] New: Tooltip in ShadowDOM does not work correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=108302

           Summary: Tooltip in ShadowDOM does not work correctly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: shinyak at chromium.org
            Blocks: 91821,97279


If nodes in ShadowDOM has title attribute, tooltip should be displayed correctly.
However, the current behavior of tooltip is very weird. For example.

1) tooltip of host element is displayed
2) if another tooltip is shown, the tooltip for ShadowDOM is displayed on the previous tooltip.

I believe hittest is not correctly implemented for ShadowDOM.
Also, this is very related to deprecatedShadowAncestorNode() bug (Bug 91821), as far as I see EventHandler code.

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