[Webkit-unassigned] [Bug 190845] New: CSS grid elements with scrolling contents stop rendering after being shown/hidden

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=190845

            Bug ID: 190845
           Summary: CSS grid elements with scrolling contents stop
                    rendering after being shown/hidden
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattheww at skyward.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 353001

  --> https://bugs.webkit.org/attachment.cgi?id=353001&action=review

Test page

In the attached page, clicking the button toggles the grid element between "display: initial" and "display: none".
The first time it's clicked, the grid shows, as expected.
The second time, the grid is hidden, but the space it occupied is not reclaimed by the element below it.
The third time, the button disappears!

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