message: update viewFlags cloning
diff: @@ -23,9 +23,8 @@ export abstract class DisplayStyleState extends ElementState {
  public get viewFlags(): ViewFlags { return this._viewFlags; }
  public set viewFlags(flags: ViewFlags) {
  - const viewFlags = flags.clone();
  - this._viewFlags = viewFlags;
  - this.setStyle("viewflags", viewFlags);
  + flags.clone(this._viewFlags);
  + this.setStyle("viewflags", flags);
  }
  public getStyles(): any { const p = this.jsonProperties as any; if (!p.styles) p.styles = new Object(); return p.styles; }
  