[Webkit-unassigned] [Bug 60986] New: Multiple <select> - Selection reset to first element from multiple selected ones

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=60986

           Summary: Multiple <select> - Selection reset to first element
                    from multiple selected ones
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Windows 7
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Forms
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: cristian.vat at gmail.com


Created an attachment (id=93816)
 --> (https://bugs.webkit.org/attachment.cgi?id=93816&action=review)
reduced test case

HTML/DOM: A <select> with multiple active and two or more <option>s already in selected state.

Action: selectElement.multiple=true

Behavior: Only the first <option> which is selected is kept as selected. The rest are displayed as not selected.
Expected: already selected elements should not be/appear deselected

Reduced test case attached. Tested on nightly WebKit-r86672, Windows 7 x64

Issue originally reported in chromium at http://code.google.com/p/chromium/issues/detail?id=80672

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