[Webkit-unassigned] [Bug 137542] New: REGRESSION: Table CSS "empty-cells: show; " ignored

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=137542

           Summary: REGRESSION: Table CSS "empty-cells: show;" ignored
           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: edwardjsabol at iname.com


Created an attachment (id=239501)
 --> (https://bugs.webkit.org/attachment.cgi?id=239501&action=review)
Empty table cells in Webkit Nightly (r174423)

After upgrading to Safari 7.1 on OSX 10.9.5 and iOS 8.0 recently, I noticed that the table CSS property "empty-cells: show;" was apparently being ignored where it wasn't previously. I don't recall noticing any issues with Safari 7.0.x or iOS 7.x, but I'm not 100% sure on that. I checked the latest Webkit Nightly (r174423), and it exhibited the same issue. The latest versions of Chrome and Firefox render empty table cells properly with "empty-cells: show;", but the latest Safari/Webkit versions do not. Toggling the "empty-cells: show;" CSS property in Web Inspector has no visible effect at all. I've attached screen shots of a table with empty cells in the latest WebKit and in the latest Chrome.

I tried to narrow down where the regression took place by downloading progressively older versions of Webkit Nightly. I got as far as SVN r166355 (late March 2014), and the bug was there. If you go a couple weeks earlier than that, Webkit Night just crashes on 10.9.5 and if you go a couple months earlier than that and launching Webkit Nightly only presents a dialog saying that OS X 10.9 is not supported.

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