[Webkit-unassigned] [Bug 246229] New: [css-flexbox] Use initial scroll position when computing baseline of a box

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=246229

            Bug ID: 246229
           Summary: [css-flexbox] Use initial scroll position when
                    computing baseline of a box
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: sgill26 at apple.com

RenderFlexibleBox::layoutAndPlaceChildren has a FIXME that stems from a Blink merge (https://bugs.webkit.org/show_bug.cgi?id=168657). It is not clear what it refers to, but I believe it is the following from the CSS Align 3 spec: 

For the purposes of finding the baselines of a box, it and all its in-flow descendants with a scrolling mechanism (see the overflow property) must be considered as if scrolled to their initial scroll position. Furthermore, if, in the case of a scroll container box, the resulting position of a first/last baseline is past a box’s end/start border edge, its position is clamped to that border edge.

https://www.w3.org/TR/css-align-3/#baseline-rules

Should figure out if this is actually what it refers to or if it is some other issue

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