message: mol-plugin: PluginState.dispose unregisters behaviors
diff: @@ -114,6 +114,12 @@ class PluginState extends PluginComponent {
  }
  dispose() {
  + this.behaviors.cells.forEach(cell => {
  + if (PluginBehavior.Behavior.is(cell.obj)) {
  + cell.obj.data.unregister();
  + }
  + });
  +
  super.dispose();
  this.data.dispose();
  this.behaviors.dispose();
  