Fix editor's clock not being processed unless composer is loaded

osu.Game/Rulesets/Edit/HitObjectComposer.cs

@@ -57,7 +57,8 @@ namespace osu.Game.Rulesets.Edit
             {
                 drawableRulesetWrapper = new DrawableEditRulesetWrapper<TObject>(CreateDrawableRuleset(Ruleset, workingBeatmap, Array.Empty<Mod>()))
                 {
-                    Clock = framedClock
+                    Clock = framedClock,
+                    ProcessCustomClock = false
                 };
             }
             catch (Exception e)

osu.Game/Screens/Edit/Editor.cs

@@ -173,6 +173,12 @@ namespace osu.Game.Screens.Edit
             bottomBackground.Colour = colours.Gray2;
         }
 
+        protected override void Update()
+        {
+            base.Update();
+            clock.ProcessFrame();
+        }
+
         protected override bool OnKeyDown(KeyDownEvent e)
         {
             switch (e.Key)