[Webkit-unassigned] [Bug 192553] New: SVG transform is not removed properly when a style with a CSS transform becomes inactive

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon Dec 10 03:58:51 PST 2018


            Bug ID: 192553
           Summary: SVG transform is not removed properly when a style
                    with a CSS transform becomes inactive
           Product: WebKit
           Version: Safari Technology Preview
          Hardware: Unspecified
                OS: macOS 10.14
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: kari.pihkala at gmail.com
                CC: zimmermann at kde.org

Created attachment 356954

  --> https://bugs.webkit.org/attachment.cgi?id=356954&action=review

webkit-transform-bug.svg test case

Transforms for SVG elements are not reset when a style with a CSS transform becomes inactive.

Steps to reproduce:

1. Open https://codepen.io/anon/pen/QzwLyG?editors=1100 (or the attached test case which shows the same test)
2. Move the mouse over the blue box - it is scaled by 2. (using :hover style)
3. Move the mouse out of the blue box - the transform isn't set back to the initial non-scaled transform.

This works in Firefox 63 and Chrome 71. The blue box returns to the initial non-scaled transform.

The bug doesn't happen if the initial transform is given as a style in the stylesheet. The bug is visible only when setting the initial transform as an attribute. So, there seems to be something wrong how the transform attribute is handled.

Tested on Safari Technology Preview Release 71 (Safari 12.1, WebKit 14607.1.15). At least Safari 12.0 and 11 have the same bug.

Possibly related bugs (the SVG transform attribute has been promoted to a presentation attribute only recently):

Transforms tracking bug

Harmonize HTML & SVG rendering

Merge CSS and SVG Transforms according to CSS3 Transforms

Master bug: Turn more SVG attributes to presentation attributes

Scaled SVG elements are leaving artifacts during animation

SVG transitions of transforms are not properly reset after the transition is removed

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