[Webkit-unassigned] [Bug 136252] New: Multiple border colors and border radius mis-rendered with pinch to zoom

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136252

           Summary: Multiple border colors and border radius mis-rendered
                    with pinch to zoom
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mike at xenforo.com


If you have an element with multiple border colors and a border radius specified, the border will generally disappear when using pinch-to-zoom. The border will be displayed while zooming, but once releasing, it will disappear. This does not happen when using the regular page zoom tool (cmd+/cmd-). When using pinch to zoom to return to 100% zoom, the border will reappear.

The attached test case should reproduce this. The "one color" entries will always be displayed; the "two color" entry without a radius will always be displayed. The final "two color"+radius entry will disappear after pinch to zoom.

This has been seen in multiple iOS versions and the current Safari nightly on OS X.

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