diff --git a/lib/ui/grid/grid.js b/lib/ui/grid/grid.js
index d84d32f..823d0c0 100644
--- a/lib/ui/grid/grid.js
+++ b/lib/ui/grid/grid.js
@@ -16,7 +16,7 @@ import { GridColumn, GridInputColumn, GridTextColumn, GridDropdownColumn, GridCh
  * @version 1.0.2
  */
 
-const ScriptPath = (self.document == null ? self.location.href : self.document.currentScript.src).replace(/ui\.min\.js\?.+$/, '');
+const ScriptPath = (self.document == null ? self.location.href : self.document.currentScript?.src ?? '').replace(/ui\.min\.js\?.+$/, '');
 const Encoder = new TextEncoder('utf-8');
 
 const ColumnChangedType = {
@@ -612,7 +612,7 @@ export class Grid {
          * @type {KeyMap<string | boolean>}
          * @private
          */
-        enabledDict: {},
+        enabledDict: null,
         /**
          * 合计行数据
          * @type {GridRowItem}
@@ -752,6 +752,12 @@ export class Grid {
          * @private
          */
         needResize: null,
+        /**
+         * 提示条消失的 Timer
+         * @type {number}
+         * @private
+         */
+        tooltipTimer: null,
         /**
          * 页面元素引用
          * @private
@@ -1331,6 +1337,7 @@ export class Grid {
         this._var.rendering = true;
         this._var.parent = container;
         this._var.isFirefox = /Firefox\//i.test(navigator.userAgent);
+        this._var.enabledDict = {};
         const grid = createElement('div', 'ui-grid');
         grid.setAttribute('tabindex', 0);
         grid.addEventListener('keydown', e => {
@@ -1418,6 +1425,7 @@ export class Grid {
                 const col = Number(holder.dataset.col);
                 if (holder.classList.contains('active')) {
                     holder.classList.remove('active');
+                    this._clearHolder(holder);
                 }
                 return this._onRowClicked(e, row, col);
             });
@@ -3896,6 +3904,22 @@ export class Grid {
         }
     }
 
+    /**
+     * 清除 tooltip 显示框，并延时后设置 `display: none`
+     * 不设置 display 的话会导致元素依然被算入滚动范围，从而影响滚动条显示
+     * @private
+     * @param {HTMLDivElement} holder 
+     */
+    _clearHolder(holder) {
+        if (this._var.tooltipTimer != null) {
+            clearTimeout(this._var.tooltipTimer);
+        }
+        this._var.tooltipTimer = setTimeout(() => {
+            holder.style.display = 'none';
+            this._var.tooltipTimer = null;
+        }, 120);
+    }
+
     /**
      * @private
      * @param {MouseEvent} e 
@@ -3912,6 +3936,7 @@ export class Grid {
             delete holder.dataset.col;
             if (holder.classList.contains('active')) {
                 holder.classList.remove('active');
+                this._clearHolder(holder);
             }
             return;
         }
@@ -3931,6 +3956,7 @@ export class Grid {
             delete holder.dataset.col;
             if (holder.classList.contains('active')) {
                 holder.classList.remove('active');
+                this._clearHolder(holder);
             }
             return;
         }
@@ -3943,6 +3969,7 @@ export class Grid {
                 delete holder.dataset.row;
                 delete holder.dataset.col;
                 holder.classList.remove('active');
+                this._clearHolder(holder);
             }
             return;
         }
@@ -3968,6 +3995,7 @@ export class Grid {
             delete holder.dataset.row;
             delete holder.dataset.col;
             holder.classList.remove('active');
+            this._clearHolder(holder);
         }
     }