[Webkit-unassigned] [Bug 112010] New: [CSS Regions] Content in a region's visible overflow does not trigger :hover state, nor JavaScript events

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=112010

           Summary: [CSS Regions] Content in a region's visible overflow
                    does not trigger :hover state, nor JavaScript events
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mibalan at adobe.com
                CC: WebkitBugTracker at adobe.com
            Blocks: 57312


Created an attachment (id=192469)
 --> (https://bugs.webkit.org/attachment.cgi?id=192469&action=review)
Test-case

CSS rules using :hover are not applied if the element is in the visible overflow of a region (-webkit-region-overflow: auto; and overflow: visible).

In contrast, :hover on normal overflowing content is applied.

Reproduction:
In the attached test case move the mouse over the blue word ("overflows")

Expected:
The blue word should become white on a green background.
The word "PASS" (in green) should be displayed above the gray square.

Actual:
Blue word does not change color. Nothing appears above the gray square.

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