Don't display calibration options when the previous play was too short to be useful

osu.Game.Tests/Visual/Gameplay/TestSceneBeatmapOffsetControl.cs

@@ -33,6 +33,20 @@ namespace osu.Game.Tests.Visual.Gameplay
             });
         }
 
+        [Test]
+        public void TestTooShortToDisplay()
+        {
+            AddStep("Set short reference score", () =>
+            {
+                offsetControl.ReferenceScore.Value = new ScoreInfo
+                {
+                    HitEvents = TestSceneHitEventTimingDistributionGraph.CreateDistributedHitEvents(0, 2)
+                };
+            });
+
+            AddAssert("No calibration button", () => !offsetControl.ChildrenOfType<SettingsButton>().Any());
+        }
+
         [Test]
         public void TestDisplay()
         {