[Webkit-unassigned] [Bug 219683] New: Setting height: auto on hover causes insane flashes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=219683

            Bug ID: 219683
           Summary: Setting height: auto on hover causes insane flashes
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: graouts at webkit.org
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 415754

  --> https://bugs.webkit.org/attachment.cgi?id=415754&action=review

Test

The attached test is simply a <div> and this style:

    div {
        background-color: blue;
        position: absolute;
        left: 0;
        top: 0;
        height: 100%;
        width: 100%;
    }

    div:hover {
        height: auto;
    }

When I move the cursor around the page the page flashes blue, as if the <div> stopped painting. This does not occur in either Firefox or Chrome.

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