[Webkit-unassigned] [Bug 140371] New: elements with display:table and width 100% show 1px flickering if parent width uses non static unit

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=140371

            Bug ID: 140371
           Summary: elements with display:table and width 100% show 1px
                    flickering if parent width uses non static unit
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: All
                OS: All
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: info at simonerescio.it

Created attachment 244461
  --> https://bugs.webkit.org/attachment.cgi?id=244461&action=review
CSS table 1px width flickering

An element that uses a display value belonging to the "table" family, when seting width to 100% it won't honor randomly for 1px to fill the width of its parent, if the parent itself has a variable unit type as width,
this is noticeable especially in case of animations,

probably it's a subpixel rounding issue that happens only with table algorithm but not with any other display type,
same behavior happens on Blink as well

screencast of demo attached
code demo : http://codepen.io/srescio/pen/gbgXod

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