Use new placeholder logic.

osu.Game/Graphics/UserInterface/OsuTextBox.cs

@@ -3,6 +3,8 @@
 
 using osu.Framework.Allocation;
 using osu.Framework.Graphics;
+using osu.Framework.Graphics.Primitives;
+using osu.Framework.Graphics.Sprites;
 using osu.Framework.Graphics.UserInterface;
 using osu.Framework.Input;
 using osu.Game.Graphics.Sprites;
@@ -19,6 +21,13 @@ namespace osu.Game.Graphics.UserInterface
 
         protected override float LeftRightPadding => 10;
 
+        protected override SpriteText CreatePlaceholder() => new OsuSpriteText
+        {
+            Font = @"Exo2.0-MediumItalic",
+            Colour = new Color4(180, 180, 180, 255),
+            Margin = new MarginPadding { Left = 2 },
+        };
+
         public OsuTextBox()
         {
             Height = 40;

osu.Game/Overlays/Options/OptionTextBox.cs

@@ -27,15 +27,15 @@ namespace osu.Game.Overlays.Options
             }
         }
 
-        protected override string InternalText
+        public OptionTextBox()
         {
-            get { return base.InternalText; }
+            OnChange += onChange;
-            set
-            {
-                base.InternalText = value;
-                if (bindable != null)
-                    bindable.Value = value;
         }
+
+        private void onChange(TextBox sender, bool newText)
+        {
+            if (bindable != null)
+                bindable.Value = Text;
         }
 
         private void bindableValueChanged(object sender, EventArgs e)

osu.Game/Overlays/Options/Sections/General/LoginOptions.cs

@@ -19,7 +19,7 @@ namespace osu.Game.Overlays.Options.Sections.General
     {
         private bool bounding = true;
 
-        protected override string Header => "Sign In";
+        protected override string Header => "Account";
 
         public override RectangleF BoundingBox => bounding ? base.BoundingBox : RectangleF.Empty;
 
@@ -112,11 +112,13 @@ namespace osu.Game.Overlays.Options.Sections.General
                 {
                     username = new OsuTextBox
                     {
+                        PlaceholderText = "Username",
                         RelativeSizeAxes = Axes.X,
                         Text = api?.Username ?? string.Empty
                     },
                     password = new OsuPasswordTextBox
                     {
+                        PlaceholderText = "Password",
                         RelativeSizeAxes = Axes.X
                     },
                     saveUsername = new OsuCheckbox

osu.Game/Screens/Select/SearchTextBox.cs

@@ -34,38 +34,11 @@ namespace osu.Game.Screens.Select
             }
         }
 
-        private SpriteText placeholder;
-
-        protected override string InternalText
-        {
-            get { return base.InternalText; }
-            set
-            {
-                base.InternalText = value;
-                if (placeholder != null)
-                {
-                    if (string.IsNullOrEmpty(value))
-                        placeholder.Text = "type to search";
-                    else
-                        placeholder.Text = string.Empty;
-                }
-            }
-        }
-
         public SearchTextBox()
         {
             Height = 35;
             Add(new Drawable[]
             {
-                placeholder = new SpriteText
-                {
-                    Font = @"Exo2.0-MediumItalic",
-                    Text = "type to search",
-                    Colour = new Color4(180, 180, 180, 255),
-                    Anchor = Anchor.CentreLeft,
-                    Origin = Anchor.CentreLeft,
-                    Margin = new MarginPadding { Left = 10 },
-                },
                 new TextAwesome
                 {
                     Icon = FontAwesome.fa_search,
@@ -74,6 +47,8 @@ namespace osu.Game.Screens.Select
                     Margin = new MarginPadding { Right = 10 },
                 }
             });
+
+            PlaceholderText = "type to search";
         }
 
         protected override void Update()