message: Single canvas resize fix
diff: @@ -8,7 +8,6 @@ import requestAnimationFrame from './animation/requestAnimationFrame';
  import Image from './graphic/Image';
  var HOVER_LAYER_ZLEVEL = 1e5;
  -
  var CANVAS_ZLEVEL = 314159;
  function parseInt10(val) {
  @@ -759,7 +758,7 @@ Painter.prototype = {
  this._width = width;
  this._height = height;
  - this.getLayer(0).resize(width, height);
  + this.getLayer(CANVAS_ZLEVEL).resize(width, height);
  }
  else {
  var domRoot = this._domRoot;
  