I discovered a possible bug, I made a rectangel with auto fill and auto outline checked, then I selected the shape and changed the outline to a brush ( I had view "brushes" checked in "display quality" so I could see the result), everything looked fine, then I changed back to "no brush" in styles window but the brush is still there when wiewing in working area but it's not there when rendered.
The way I work around this is that while you select the None brush, you set both the Brush jitter angle and the Brush spacing to zero. Alternatively, you can save and reload the file.
