diff --git a/designer-base/src/main/java/com/fr/design/gui/icontainer/UIEastResizableContainer.java b/designer-base/src/main/java/com/fr/design/gui/icontainer/UIEastResizableContainer.java
index 125cd3aa1..dcd33498a 100644
--- a/designer-base/src/main/java/com/fr/design/gui/icontainer/UIEastResizableContainer.java
+++ b/designer-base/src/main/java/com/fr/design/gui/icontainer/UIEastResizableContainer.java
@@ -296,10 +296,9 @@ public class UIEastResizableContainer extends JPanel {
                     model = UIConstants.MODEL_NORMAL;
                     refreshContainer();
                 }
-
                 @Override
-                public void mouseClicked(MouseEvent e) {
-                    if (e.getX() <= ARROW_RANGE) {
+                public void mouseReleased(MouseEvent e) {
+                    if (isInPane(e)) {
                         if (containerWidth == leftPaneWidth) {
                             showContainer();
                         } else {
@@ -309,7 +308,9 @@ public class UIEastResizableContainer extends JPanel {
                 }
             });
         }
-
+        public boolean isInPane(MouseEvent e){
+            return e.getX() <= ARROW_RANGE && e.getX() >= 0 && e.getY() <= topToolPaneHeight && e.getY() >= 0;
+        }
         @Override
         public void paint(Graphics g) {
             Image button;