fix : JoinMenu Bug

Reported by MoProductions01 in our issue tracker!

.gitignore

 .UserSettings/
 UserSettings
 ProjectSettings/RiderScriptEditorPersistedState.asset
+.vsconfig
+ProjectSettings/Packages/com.unity.services.vivox/Settings.json

Assets/Scripts/GameLobby/Lobby/LobbyManager.cs

             string playerId = AuthenticationService.Instance.PlayerId;
 
             await LobbyService.Instance.RemovePlayerAsync(m_CurrentLobby.Id, playerId);
-            m_CurrentLobby = null;
+            Dispose();
         }
 
         public async Task UpdatePlayerDataAsync(Dictionary<string, string> data)

Assets/Scripts/GameLobby/UI/JoinMenuUI.cs

     /// </summary>
     public class JoinMenuUI : UIPanelBase
     {
-        [SerializeField]
-        LobbyEntryUI m_LobbyEntryPrefab;
+        [SerializeField] LobbyEntryUI m_LobbyEntryPrefab;
-        [SerializeField]
-        RectTransform m_LobbyButtonParent;
+        [SerializeField] RectTransform m_LobbyButtonParent;
-        [SerializeField]
-        TMP_InputField m_JoinCodeField;
+        [SerializeField] TMP_InputField m_JoinCodeField;
 
         public JoinCreateLobbyUI m_JoinCreateLobbyUI;
         /// <summary>
 
         public void OnJoinButtonPressed()
         {
-            if (m_LocalLobbySelected == null)
-                return;
-            var selectedLobbyID = m_LocalLobbySelected.LobbyID.Value;
+            string selectedLobbyID = null;
+            if (m_LocalLobbySelected != null)
+            {
+                selectedLobbyID = m_LocalLobbySelected.LobbyID.Value;
+            }
 
             Manager.JoinLobby(selectedLobbyID, m_InputLobbyCode);
             m_LocalLobbySelected = null;