context2d.strokeText() strokes the path under FF3.6/4

I am facing a strange effect with strokeText under FF (3.6 and 4beta4) that I don't reproduce under Chrome or Safari. If I draw a filled path shape (but not stroked), and then a stroked text, the path is stroked when strokeText() is called.

Here is my code:

            var el = document.getElementById('canvas'),
            ctx = el.getContext('2d');

        ctx.save();
        // draw Rect
        ctx.beginPath();
        ctx.moveTo(100, 100);
        ctx.lineTo(200, 100);
        ctx.lineTo(200, 200);
        ctx.lineTo(100, 200);
        ctx.lineTo(100, 100);
        ctx.closePath();
        ctx.fillStyle = 'red';
        ctx.fill();

                    // draw Text
        ctx.save();         
        ctx.textAlign = 'start';
        ctx.fillStyle = "rgba(0,0,0,0.0)";
        ctx.strokeStyle = "blue";
        ctx.lineWidth = 2;
        ctx.font = "bold 35pt sans-serif";
        ctx.strokeText("Hello World !", 100, 280);  

        ctx.restore();

If you run it, the rect is 开发者_Python百科stroked in blue, while it should not.

Do you see something wrong with this code, or is it a bug in FF ?

Thanks !

It has been fixed in Firefox 4 beta 8. (just tested...). I think the related bug is : https://bugzilla.mozilla.org/show_bug.cgi?id=499628

What about drawing the rect in this way?

var el = document.getElementById('canvas'),
ctx = el.getContext('2d');

ctx.save();
// draw Rect
ctx.fillStyle = 'red';
ctx.fillRect  (100, 100, 100, 100); // <===
// draw Text
ctx.save();         
ctx.textAlign = 'start';
ctx.fillStyle = "rgba(0,0,0,0.0)";
ctx.strokeStyle = "blue";
ctx.lineWidth = 2;
ctx.font = "bold 35pt sans-serif";
ctx.strokeText("Hello World !", 100, 280);  

ctx.restore();

EDIT below about strokeText problem, it seems that if you draw the text before drawing and filling the path fixes it

var el = document.getElementById('canvas'),
ctx = el.getContext('2d');

// draw Text -> at first
ctx.save();         
ctx.textAlign = 'start';
ctx.fillStyle = "rgba(0,0,0,0.0)";
ctx.strokeStyle = "blue";
ctx.lineWidth = 2;
ctx.font = "bold 35pt sans-serif";
ctx.strokeText("Hello World !", 100, 280);

ctx.save();
// draw Rect
ctx.beginPath();
ctx.moveTo(100, 100);
ctx.lineTo(200, 100);
ctx.lineTo(200, 200);
ctx.lineTo(100, 200);
ctx.lineTo(100, 100);
ctx.closePath();
ctx.fillStyle = 'red';
ctx.fill();

ctx.restore();