setTransform broken in simulator

Unpaired8373

Running the following canvas code in the simulator does not show a line:

ctx.strokeStyle = "#FFFFFF";
ctx.setTransform(1, 0, 0, 1, 300, 440);
ctx.beginPath();
ctx.moveTo(0, 0);
ctx.lineTo(0, -500);
ctx.stroke();

whereas replacing the setTransform() call with a translate(300,440) call does give the wanted effect.

Double checking the code in a browser does give the expected result.

I did not have the chance yet to test this on a real watch.