This issue was originally filed by alexe.kaigorodov@gmail.com

the doc reads:

void moveTo(Point p)
Moves this window to a specific position.
x and y can be negative.

However, this method

1. uses coordinates of point p as relative, not absolute coordinates
2. negative coordinate values ignored, considered as 0

Run this code:

  WindowBase nw=window.open("about:blank", "_blank");
  int nx=-100, ny=-100;
  print("from ${nw.screenLeft}:${nw.screenTop} to $nx, $ny");
  nw.moveTo(new Point(nx, ny));
  print("after moveTo: ${nw.screenLeft}:${nw.screenTop}");
  nw.close();