Hide in-game cursor manually in the testbrowser

osu.Game.Tournament.Tests/TournamentTestBrowser.cs

@@ -19,6 +19,9 @@ namespace osu.Game.Tournament.Tests
                 Depth = 10
             }, AddInternal);
 
+            MenuCursorContainer.Cursor.AlwaysPresent = true;
+            MenuCursorContainer.Cursor.Alpha = 0;
+
             // Have to construct this here, rather than in the constructor, because
             // we depend on some dependencies to be loaded within OsuGameBase.load().
             Add(new TestBrowser());