[Webkit-unassigned] [Bug 153843] New: Inherited CSS property transitions happen in sequence instead of simultaneously

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=153843

            Bug ID: 153843
           Summary: Inherited CSS property transitions happen in sequence
                    instead of simultaneously
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Macintosh
                OS: OS X 10.11
            Status: NEW
          Severity: Minor
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: brandon.smith.945 at gmail.com

When both a parent and child element have the same transition configuration, and the property in question is changed on the parent (and inherited by the child), the child's transition will wait until the parent's has finished. If the child's property is changed directly - instead of being inherited - the transitions will happen at the same time. I've made a JSFiddle to illustrate (https://jsfiddle.net/brundon/32bLoLuw/2/). I've confirmed this happens in Chrome and Safari on OSX, and thought it might have been an obscure CSS spec quirk until testing it in Firefox and finding that it does not happen there.

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