Photon OnPhotonPlayerDisconnected Works For Only Master Client

Hello, i'm making team and slot system by using photon

My issue: I need to release slots when someone disconnected by using OnPhotonPlayerDisconnected. But it's only works for master client.

My Scripts:

TeamSlotRemover.cs

 public TeamSelection teamSelection;
 
  public void OnPhotonPlayerDisconnected(PhotonPlayer player)
   {         
         int slotindexwilldelete = (int)player.CustomProperties["slot_index"];       
         teamSelection.ReleaseSlot(slotindexwilldelete);       
   }

TeamSelection.cs

 public void ReleaseSlot(int index)
   {
         Hashtable updateSlots2 = new Hashtable();
         updateSlots2.Add("teamslot" + index.ToString(), false);
         PhotonNetwork.room.SetCustomProperties(updateSlots2, null, false);
         Slots[index] = false;
  }

Both script added my GameManager Object which is drag and dropped to scene. When i call "ReleaseSlot" method directly by using UI buttons, it does works perfect for every clients. I only can't achieve, making this when someone disconnected.

Thanks.