[Webkit-unassigned] [Bug 79128] New: Fieldset unexpectedly stretches to minimum intrinsic width.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=79128

           Summary: Fieldset unexpectedly stretches to minimum intrinsic
                    width.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
               URL: http://wil.to/webkit-fieldset.html
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mat at matmarquis.com
                CC: mitz at webkit.org, tkent at chromium.org


Hey guys,

This originally came in as a jQuery Mobile bug ( https://github.com/jquery/jquery-mobile/issues/3150 ), but after some digging it seems to be an issue inherent to fieldsets in WebKit. I would expect a largely unmodified fieldset to behave in much the same way as a div would, but it seems that percentage-based widths are ignored in favor of the inherent width of the elements they contain—even when a specific `overflow` property is set.

My best guess is that it’s related to the “stretchesToMinIntrinsicWidth()” boolean added here: 
http://trac.webkit.org/changeset/18788/trunk/WebCore/rendering/RenderFieldset.h

Thanks!
Mat Marquis

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