diff --git a/Runtime/LoopHorizontalScrollRect.cs b/Runtime/LoopHorizontalScrollRect.cs
index 6e85194..968f4fb 100644
--- a/Runtime/LoopHorizontalScrollRect.cs
+++ b/Runtime/LoopHorizontalScrollRect.cs
@@ -139,7 +139,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.max.x > contentBounds.max.x - m_ContentRightPadding)
+            if (viewBounds.max.x > contentBounds.max.x - threshold - m_ContentRightPadding)
             {
                 float size = NewItemAtEnd(), totalSize = size;
                 while (size > 0 && viewBounds.max.x > contentBounds.max.x - m_ContentRightPadding + totalSize)
@@ -151,7 +151,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.min.x < contentBounds.min.x + m_ContentLeftPadding)
+            if (viewBounds.min.x < contentBounds.min.x + threshold + m_ContentLeftPadding)
             {
                 float size = NewItemAtStart(), totalSize = size;
                 while (size > 0 && viewBounds.min.x < contentBounds.min.x + m_ContentLeftPadding - totalSize)
diff --git a/Runtime/LoopHorizontalScrollRectMulti.cs b/Runtime/LoopHorizontalScrollRectMulti.cs
index 130664e..13ba0a3 100644
--- a/Runtime/LoopHorizontalScrollRectMulti.cs
+++ b/Runtime/LoopHorizontalScrollRectMulti.cs
@@ -139,7 +139,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.max.x > contentBounds.max.x - m_ContentRightPadding)
+            if (viewBounds.max.x > contentBounds.max.x - threshold - m_ContentRightPadding)
             {
                 float size = NewItemAtEnd(), totalSize = size;
                 while (size > 0 && viewBounds.max.x > contentBounds.max.x - m_ContentRightPadding + totalSize)
@@ -151,7 +151,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.min.x < contentBounds.min.x + m_ContentLeftPadding)
+            if (viewBounds.min.x < contentBounds.min.x + threshold + m_ContentLeftPadding)
             {
                 float size = NewItemAtStart(), totalSize = size;
                 while (size > 0 && viewBounds.min.x < contentBounds.min.x + m_ContentLeftPadding - totalSize)
diff --git a/Runtime/LoopScrollRectBase.cs b/Runtime/LoopScrollRectBase.cs
index 3cd735e..3ae2a2e 100644
--- a/Runtime/LoopScrollRectBase.cs
+++ b/Runtime/LoopScrollRectBase.cs
@@ -875,7 +875,7 @@ IEnumerator ScrollToCellCoroutine(int index, float speed)
         protected abstract void ProvideData(Transform transform, int index);
 
         /// <summary>
-        /// Refresh item data
+        /// Refresh item data (if totalCount increases, please call `RefillCells` instead)
         /// </summary>
         public void RefreshCells()
         {
diff --git a/Runtime/LoopVerticalScrollRect.cs b/Runtime/LoopVerticalScrollRect.cs
index cecc183..66cc9f0 100644
--- a/Runtime/LoopVerticalScrollRect.cs
+++ b/Runtime/LoopVerticalScrollRect.cs
@@ -138,7 +138,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.min.y < contentBounds.min.y + m_ContentBottomPadding)
+            if (viewBounds.min.y < contentBounds.min.y + threshold + m_ContentBottomPadding)
             {
                 float size = NewItemAtEnd(), totalSize = size;
                 while (size > 0 && viewBounds.min.y < contentBounds.min.y + m_ContentBottomPadding - totalSize)
@@ -150,7 +150,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.max.y > contentBounds.max.y - m_ContentTopPadding)
+            if (viewBounds.max.y > contentBounds.max.y - threshold - m_ContentTopPadding)
             {
                 float size = NewItemAtStart(), totalSize = size;
                 while (size > 0 && viewBounds.max.y > contentBounds.max.y - m_ContentTopPadding + totalSize)
diff --git a/Runtime/LoopVerticalScrollRectMulti.cs b/Runtime/LoopVerticalScrollRectMulti.cs
index eacf0e9..58d6f40 100644
--- a/Runtime/LoopVerticalScrollRectMulti.cs
+++ b/Runtime/LoopVerticalScrollRectMulti.cs
@@ -138,7 +138,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.min.y < contentBounds.min.y + m_ContentBottomPadding)
+            if (viewBounds.min.y < contentBounds.min.y + threshold + m_ContentBottomPadding)
             {
                 float size = NewItemAtEnd(), totalSize = size;
                 while (size > 0 && viewBounds.min.y < contentBounds.min.y + m_ContentBottomPadding - totalSize)
@@ -150,7 +150,7 @@ protected override bool UpdateItems(ref Bounds viewBounds, ref Bounds contentBou
                     changed = true;
             }
 
-            if (viewBounds.max.y > contentBounds.max.y - m_ContentTopPadding)
+            if (viewBounds.max.y > contentBounds.max.y - threshold - m_ContentTopPadding)
             {
                 float size = NewItemAtStart(), totalSize = size;
                 while (size > 0 && viewBounds.max.y > contentBounds.max.y - m_ContentTopPadding + totalSize)
diff --git a/Samples~/Demo/Scripts/UI_ControlData.cs b/Samples~/Demo/Scripts/UI_ControlData.cs
index f5467fb..b615f60 100644
--- a/Samples~/Demo/Scripts/UI_ControlData.cs
+++ b/Samples~/Demo/Scripts/UI_ControlData.cs
@@ -61,9 +61,10 @@ private void OnButtonAddDataClick()
             {
                 int RandomResult = Random.Range(0, 10);
                 m_ListBank.AddContent(RandomResult);
-                m_InitOnStart.m_LoopScrollRect.totalCount = m_InitOnStart.m_LoopListBank.GetListLength();
-                m_InitOnStart.m_LoopScrollRect.RefreshCells();
             }
+
+            m_InitOnStart.m_LoopScrollRect.totalCount = m_InitOnStart.m_LoopListBank.GetListLength();
+            m_InitOnStart.m_LoopScrollRect.RefreshCells();
         }
 
         private void OnButtonSetDataClick()