[Webkit-unassigned] [Bug 148645] New: [CSS Grid Layout] Layout is wrong for flex factor sum between 0 and 1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=148645

            Bug ID: 148645
           Summary: [CSS Grid Layout] Layout is wrong for flex factor sum
                    between 0 and 1
    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

Created attachment 260313
  --> https://bugs.webkit.org/attachment.cgi?id=260313&action=review
test to reproduce the issue

Steps to reproduce the problem:
1. load the attached HTML file
2. 
3. 

What is the expected behavior?
The columns in the 2nd grid should only extend to about 60%
(0.1 + 0.2 + 0.3) of the page width.

What went wrong?
The two grid containers renders exactly the same which demonstrates that Chrome scales up the flex sizes so that their sum is 1.  This is wrong per the Grid spec.
https://drafts.csswg.org/css-grid/#algo-flex-tracks

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