Add comment covering intentional call to ClearTransformsAfter

osu.Game/Rulesets/Judgements/DrawableJudgement.cs

@@ -149,8 +149,10 @@ namespace osu.Game.Rulesets.Judgements
 
         private void runAnimation()
         {
+            // undo any transforms applies in ApplyMissAnimations/ApplyHitAnimations to get a sane initial state.
             ApplyTransformsAt(double.MinValue, true);
             ClearTransforms(true);
+
             LifetimeStart = Result.TimeAbsolute;
 
             using (BeginAbsoluteSequence(Result.TimeAbsolute, true))

osu.Game/Rulesets/Objects/Drawables/DrawableHitObject.cs

@@ -439,6 +439,8 @@ namespace osu.Game.Rulesets.Objects.Drawables
         private void clearExistingStateTransforms()
         {
             base.ApplyTransformsAt(double.MinValue, true);
+
+            // has to call this method directly (not ClearTransforms) to bypass the local ClearTransformsAfter override.
             base.ClearTransformsAfter(double.MinValue, true);
         }