[Webkit-unassigned] [Bug 163535] New: [css-grid] Different width of grid container between initial load and refresh

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=163535

            Bug ID: 163535
           Summary: [css-grid] Different width of grid container between
                    initial load and refresh
    Classification: Unclassified
           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: jfernandez at igalia.com
                CC: simon.fraser at apple.com

If you open the following Layout Test [1]:
LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html

The first time the width of the first grid container is 110px, but if you resize the window or reload the page, the width is 120px.

We should investigate why we're getting different results depending on the layout.

I tried to create a reduced test case but it seems that I cannot reproduce it without the JavaScript involved on the test.

I managed to reproduce it inside JS Bin too (resize the output frame to see it):
http://jsbin.com/milawa/edit?html,output

[1] https://trac.webkit.org/browser/trunk/LayoutTests/fast/css-grid-layout/grid-track-sizing-with-percentages-and-orthogonal-flows.html

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