191372 2018-11-07 09:26:06 -0800 Inserting an attached item to an SVGList should not remove it from its current SVGList 2019-04-13 02:26:16 -0700 1 1 1 Unclassified WebKit SVG WebKit Nightly Build Unspecified Unspecified RESOLVED DUPLICATE 191237 P2 Normal --- 191292 1 sabouhallawa webkit-unassigned zimmermann oldest_to_newest 1476013 0 sabouhallawa 2018-11-07 09:26:06 -0800 Instead it should make a copy and insert the copy without affecting the attached item. SVG 1.1 specs: https://www.w3.org/TR/SVG11/types.html#InterfaceSVGLengthList SVG 2 specs: https://www.w3.org/TR/SVG/types.html#TermListInterface This will affect the following methods: initialize() insertItemBefore() replaceItem() appendItem() of the following interfaces: SVGNumberList SVGLengthList SVGTransformList SVGPathSegList 1527026 1 sabouhallawa 2019-04-13 02:26:16 -0700 This is already fixed by removing the SVG properties tear off objects. *** This bug has been marked as a duplicate of bug 191237 ***