diff --git a/Runtime/Internal/Extensions/ComponentExtensions.cs b/Runtime/Internal/Extensions/ComponentExtensions.cs
index 255ef6b..b45f016 100644
--- a/Runtime/Internal/Extensions/ComponentExtensions.cs
+++ b/Runtime/Internal/Extensions/ComponentExtensions.cs
@@ -50,7 +50,7 @@ namespace Coffee.UIParticleInternal
             var childCount = tr.childCount;
             for (var i = 0; i < childCount; i++)
             {
-                tr.GetChild(i).GetComponentsInChildren(results, depth - 1);
+                tr.GetChild(i).GetComponentsInChildren_Internal(results, depth - 1);
             }
         }
 
diff --git a/Runtime/Internal/Utilities/FastAction.cs b/Runtime/Internal/Utilities/FastAction.cs
index 4d389a5..0428d6d 100755
--- a/Runtime/Internal/Utilities/FastAction.cs
+++ b/Runtime/Internal/Utilities/FastAction.cs
@@ -20,6 +20,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Add(T rhs)
         {
+            if (rhs == null) return;
             Profiler.BeginSample("(COF)[FastAction] Add Action");
             var node = s_NodePool.Rent();
             node.Value = rhs;
@@ -32,6 +33,7 @@ namespace Coffee.UIParticleInternal
         /// </summary>
         public void Remove(T rhs)
         {
+            if (rhs == null) return;
             Profiler.BeginSample("(COF)[FastAction] Remove Action");
             var node = _delegates.Find(rhs);
             if (node != null)
@@ -63,6 +65,11 @@ namespace Coffee.UIParticleInternal
                 node = node.Next;
             }
         }
+
+        public void Clear()
+        {
+            _delegates.Clear();
+        }
     }
 
     /// <summary>
diff --git a/Runtime/Internal/Utilities/Logging.cs b/Runtime/Internal/Utilities/Logging.cs
index d9a2f5e..feee1be 100644
--- a/Runtime/Internal/Utilities/Logging.cs
+++ b/Runtime/Internal/Utilities/Logging.cs
@@ -5,7 +5,6 @@ using Object = UnityEngine.Object;
 #if ENABLE_COFFEE_LOGGER
 using System.Reflection;
 using System.Collections.Generic;
-
 #else
 using Conditional = System.Diagnostics.ConditionalAttribute;
 #endif
diff --git a/Runtime/Internal/Utilities/UIExtraCallbacks.cs b/Runtime/Internal/Utilities/UIExtraCallbacks.cs
index d62d56b..be9e7ee 100755
--- a/Runtime/Internal/Utilities/UIExtraCallbacks.cs
+++ b/Runtime/Internal/Utilities/UIExtraCallbacks.cs
@@ -64,11 +64,12 @@ namespace Coffee.UIParticleInternal
 
 #if UNITY_EDITOR
         [InitializeOnLoadMethod]
-#else
-        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
 #endif
+        [RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
         private static void InitializeOnLoad()
         {
+            Canvas.willRenderCanvases -= OnAfterCanvasRebuild;
+            s_IsInitializedAfterCanvasRebuild = false;
         }
 
         /// <summary>