Group object is not persisted after element was deleted in UI

Hi, i come from my another question where i added items to existing group. But i encountered not expected behaviour when fetching selected group. What i do:

• Select group of items and run my code (see bellow):

  

   

• Delete one item from this group via UI
• Select this group again. I can see, that counter of the items updated in UI
• Then i run my code wich triggers onClick()(thanks to @Mettin ):  

  export async function checkGroupItems() {
      let selectedElements = await miro.board.getSelection();
      if (selectedElements) {
          let group = await miro.board.getById(selectedElements[0].groupId);
          console.log(group);
      }
  }

   

• And i still get that deleted item in group.items

  

   

Is this a bug or is it my code caches group in somewhere? I call my function from app.jsx

<div className="cs1 ce12">
                <a
                    onClick={(event) => checkGroupItems()}
                    className="button button-primary"
                >
                    Check group items
                </a>
</div>

I come from Java so i may not quite understand caching in js or how script file itself stored in memory.