Created attachment 59744 [details] testcase SVG 1.1 19.3 Animation using the SVG DOM states: If scripts are modifying the same attributes or properties that are being animated by SVG's animation elements, the scripts modify the base value for the animation. If a base value is modified while an animation element is animating the corresponding attribute or property, the animations are required to adjust dynamically to the new base value. No testcase is currently linked, Please find attached a proposed testcase.
<set> and fill="freeze" prevent script from ever having effect my misunderstanding