Svelte App Header Button doesn't update the first time it is clicked and returned

   async _toggleTokenLink(event) {
      const isLinked = this.actor.prototypeToken.actorLink;
      console.log(event);

      // Update the actor
      await this.actor.prototypeToken.update({ actorLink: !(isLinked) });

      // Update the button
      event.button.title = localize(isLinked ? 'tokenIsLinkedToActor' : 'tokenIsUnlinkedFromActor');
      event.button.icon = isLinked ? LINKED_ICON : UNLINKED_ICON;
      return event.button;
   }