Start key counter / gameplay leaderboard hidden to avoid initial fade out

osu.Game/Screens/Play/HUD/SoloGameplayLeaderboard.cs

@@ -53,6 +53,9 @@ namespace osu.Game.Screens.Play.HUD
             base.LoadComplete();
             Scores.BindCollectionChanged((_, _) => Scheduler.AddOnce(showScores), true);
 
+            // Alpha will be updated via `updateVisibility` below.
+            Alpha = 0;
+
             AlwaysVisible.BindValueChanged(_ => updateVisibility());
             configVisibility.BindValueChanged(_ => updateVisibility(), true);
         }

osu.Game/Screens/Play/KeyCounterDisplay.cs

@@ -39,6 +39,7 @@ namespace osu.Game.Screens.Play
             {
                 Direction = FillDirection.Horizontal,
                 AutoSizeAxes = Axes.Both,
+                Alpha = 0,
             };
         }