[Webkit-unassigned] [Bug 156786] New: Flexbox stop resizing in Safari Technology Preview

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=156786

            Bug ID: 156786
           Summary: Flexbox stop resizing in Safari Technology Preview
    Classification: Unclassified
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Macintosh
                OS: OS X 10.11
            Status: NEW
          Severity: Major
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: webkit.org at ricciadams.com

Created attachment 276812
  --> https://bugs.webkit.org/attachment.cgi?id=276812&action=review
HTML file demonstrating issue

This is a bit hard to explain, but I've attached a reproducible reduction.

The attached HTML file creates a grid using flex box.  In response to a Window "resize" event, the grid is resized to fill the entire window.  Under Safari Technology Preview, the grid becomes stuck after the initial resize.

Steps to Reproduce:
1) Load the HTML in a web browser
2) Resize the window to be larger
3) The grid will snap to the new window size
4) Resize the window to be smaller

Expected Result:
In Safari 9, Chrome, and Firefox, the grid should continue to resize and fill the window on both the horizontal and vertical axis.

Actual Result:
In Safari Technology Preview and WebKit nightlies, each row in the grid becomes "stuck" after the initial resize, and won't shorten.  The grid continues to work in the horizontal axis.

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