message: Fixed painting slow down after some time
diff: @@ -375,6 +375,8 @@ export class TimeAxisWidget implements MouseEventHandlers, IDestroyable {
  }
  }
  });
  +
  + ctx.restore();
  }
  private _alignTickMarkLabelCoordinate(ctx: CanvasRenderingContext2D, coordinate: number, labelText: string): number {
  