Graphics.drawString not working on 1v98?

I reflashed to 1v98 and drawString seems to not work:

var g = Graphics.createArrayBuffer(8, 8, 1);

//console
>g.drawString("X");
=undefined
>g.buffer.toString()
="0,0,0,0,0,0,0,0" //empty??

tried fillRect works fine:

var g = Graphics.createArrayBuffer(8, 8, 1);

//console
>g.fillRect(0,0,4,4);
=undefined
>g.buffer.toString();
="31,31,31,31,31,0,0,0" //not empty

Am I missing anything?

Thanks!