[Webkit-unassigned] [Bug 177524] New: Scaled SVG elements are leaving artifacts during animation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177524

            Bug ID: 177524
           Summary: Scaled SVG elements are leaving artifacts during
                    animation
           Product: WebKit
           Version: Safari 10
          Hardware: Macintosh
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: johansson.johan at gmail.com
                CC: zimmermann at kde.org

Created attachment 321949

  --> https://bugs.webkit.org/attachment.cgi?id=321949&action=review

Screenshot

When animating a circle on top of other circles, the background is not drawn correctly.
If the circles do not have a "scale" transform on the g object, it draws fine.

Please see fiddle https://jsfiddle.net/6cbvxzte/3/
Fiddle when it works fine (without scale): https://jsfiddle.net/6cbvxzte/

It started to occur in Safari 6.2 and doesn't draw correctly in any newer version from what I have seen.

Have not been able to reproduce in Chrome (also older versions).

I have tried to find a bug for this in the database so accept my apology if there is one already.

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