0.6.6: Fixed issues with both canvas and scene picker

* Scene: Fixed issue, where scene picker wouldn't update correctly, when in play mode and changing active scene
* Canvas: Fixed issue, where it wasn't possible to select canvas in prefab stage

Editor/Toolbar/Tools/ToolScenePickerEditorStateChanged.cs

@@ -0,0 +1,26 @@
+using Game.NavigationTool.Editor.Tools;
+using UnityEditor;
+using UnityEngine.SceneManagement;
+
+namespace Game.NavigationTool.Editor.Toolbar
+{
+    [InitializeOnLoad]
+    internal static class ToolScenePickerEditorStateChanged
+    {
+        static ToolScenePickerEditorStateChanged()
+        {
+            EditorApplication.playModeStateChanged += OnPlayModeStateChanged;
+            SceneManager.activeSceneChanged += OnActiveSceneChanged;
+        }
+
+        private static void OnPlayModeStateChanged(PlayModeStateChange state)
+        {
+            ToolScenePicker.SetAsDirty();
+        }
+
+        private static void OnActiveSceneChanged(Scene current, Scene next)
+        {
+            ToolScenePicker.SetAsDirty();
+        }
+    }
+}