DOMMatrix scaleSelf损坏了吗？

Question

我不知道是否有人真正使用过此功能，但是我想使用DOMMatrix对象在HTMLCanvas 2d上下文中定位和 SCALE SVG路径。

var path = new Path2D("M0.55,0.55 C0.55,0.55,0.45,0.55,0.45,0.55 C0.45,0.55,0.45,0.45,0.45,0.45 C0.45,0.45,0.55,0.45,0.55,0.45 C0.55,0.45,0.55,0.55,0.55,0.55");

var matrix = new DOMMatrix();
matrix.translateSelf(50,50);
matrix.scaleSelf(5); // <-- THIS IS THE PROBLEM!

//add matrix to SVG-Path 
var draw = new Path2D();
draw.addPath(path, matrix);

ctx.strokeStyle = "lime";
ctx.stroke(draw);

现在，由于某种原因scaleSelf（）破坏了矩阵。对象属性用NAN填充。

规模化之前

缩放后

有人修复了吗？ （浏览器：Firefox Dev）

var matrix = new DOMMatrix();
matrix.translateSelf(50,50);
console.log("After translate: ", matrix);
matrix.scaleSelf(5); // <-- THIS IS THE PROBLEM!
console.log("After scale: ", matrix);