Fix states not correctly validated in EventBus.

Assets/Cryville/Crtr/Event/EventBus.cs

@@ -47,8 +47,6 @@ namespace Cryville.Crtr.Event {
 			dest.workingStates.Clear();
 			dest.invalidatedStates.Clear();
 			RootState.CopyTo(ct, dest.RootState);
-			dest.ValidateStates();
-
 			if (ct >= 2) {
 				dest.activeContainers.Clear();
 				foreach (var c in activeContainers) {
@@ -58,6 +56,7 @@ namespace Cryville.Crtr.Event {
 					}
 				}
 			}
+			dest.ValidateStates();
 		}
 
 		public void Dispose() {
@@ -65,7 +64,7 @@ namespace Cryville.Crtr.Event {
 		}
 
 		public void NotifyWorkingChanged(ContainerState state) {
-			invalidatedStates.Add(state);
+			if (!invalidatedStates.Contains(state)) invalidatedStates.Add(state);
 		}
 
 		void Expand(ContainerState s = null) {