diff --git a/Documentation~/zh/changelog.md b/Documentation~/zh/changelog.md
index 3bc725bf..12ec6e2f 100644
--- a/Documentation~/zh/changelog.md
+++ b/Documentation~/zh/changelog.md
@@ -70,11 +70,13 @@ slug: /changelog
 
 ## master
 
-* (2023.12.19) 修复`Legend`的`LabelStyle`的`formatter`不生效的问题
+* (2023.12.21) 修复`TriggerTooltip()`接口在指定0或最大index时可能无法触发的问题
+* (2023.12.19) 修复`Legend`的`LabelStyle`设置`formatter`后不生效的问题
 * (2023.12.12) 增加`Legend`的`TextLimit`可限制图例显示文本的长度
 * (2023.12.11) 修复`Serie`添加`double.MaxValue`时坐标绘制失败的问题
 * (2023.12.10) 增加`Serie`的`minShowLabel`可隐藏小于指定值的`label`
-* (2023.12.09) 增加`LevelStyle`的`LineStyle`和`depth`支持
+* (2023.12.09) 增加`LevelStyle`的`depth`指定所属层次
+* (2023.12.09) 增加`LevelStyle`的`LineStyle`设置线条样式
 * (2023.12.09) 增加`Serie`的`Link`可用于桑基图添加节点边关系
 * (2023.12.05) 增加`ResetChartStatus()`可主动重置图表状态
 
diff --git a/Runtime/Coord/Grid/GridCoord.cs b/Runtime/Coord/Grid/GridCoord.cs
index 8f4ccdc4..1d04c4b8 100644
--- a/Runtime/Coord/Grid/GridCoord.cs
+++ b/Runtime/Coord/Grid/GridCoord.cs
@@ -203,7 +203,7 @@ namespace XCharts.Runtime
         [Since("v3.7.0")]
         public bool ContainsX(float x)
         {
-            return x >= context.x && x <= context.x + context.width;
+            return x >= context.x - 0.01f && x <= context.x + context.width + 0.01f;
         }
 
         /// <summary>
@@ -215,7 +215,7 @@ namespace XCharts.Runtime
         [Since("v3.7.0")]
         public bool ContainsY(float y)
         {
-            return y >= context.y && y <= context.y + context.height;
+            return y >= context.y - 0.01f && y <= context.y + context.height + 0.01f;
         }
 
         /// <summary>
diff --git a/Runtime/Internal/BaseChart.API.cs b/Runtime/Internal/BaseChart.API.cs
index e799dbd4..ad0dce9f 100644
--- a/Runtime/Internal/BaseChart.API.cs
+++ b/Runtime/Internal/BaseChart.API.cs
@@ -733,6 +733,7 @@ namespace XCharts.Runtime
         [Since("v3.7.0")]
         public void CancelTooltip()
         {
+            m_PointerEventData = null;
             var tooltip = GetChartComponent<Tooltip>();
             if (tooltip != null)
             {