Fix regressions caused by overlay class.

osu.Game/OsuGame.cs

@@ -97,7 +97,6 @@ namespace osu.Game
                     OnHome = delegate { MainMenu?.MakeCurrent(); },
                     OnSettings = Options.ToggleVisibility,
                     OnPlayModeChange = delegate (PlayMode m) { PlayMode.Value = m; },
-                    Alpha = 0.001f,
                 },
                 Chat = new ChatConsole(API),
                 new VolumeControl
@@ -112,12 +111,6 @@ namespace osu.Game
                 }
             });
 
-            Toolbar.State = Visibility.Hidden;
-            Toolbar.Flush();
-
-            Chat.State = Visibility.Hidden;
-            Chat.Flush();
-
             intro.ModePushed += modeAdded;
             intro.Exited += modeRemoved;
 

osu.Game/Overlays/Overlay.cs

@@ -3,8 +3,20 @@ using osu.Framework.Graphics.Containers;
 
 namespace osu.Game.Overlays
 {
+    /// <summary>
+    /// An element which starts hidden and can be toggled to visible.
+    /// </summary>
     public abstract class Overlay : Container, IStateful<Visibility>
     {
+        public override void Load(BaseGame game)
+        {
+            base.Load(game);
+
+            //TODO: init code using Alpha or IsVisible override to ensure we don't call Load on children before we first get unhidden.
+            PopOut();
+            Flush();
+        }
+
         private Visibility state;
         public Visibility State
         {
@@ -30,9 +42,9 @@ namespace osu.Game.Overlays
 
         protected abstract void PopOut();
 
-        public void ToggleVisibility()
+        public void ToggleVisibility() => State = (State == Visibility.Visible ? Visibility.Hidden : Visibility.Visible);
-            => State = (State == Visibility.Visible ? Visibility.Hidden : Visibility.Visible);
     }
+
     public enum Visibility
     {
         Hidden,