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 b3d6e054d5..00c708baec 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
@@ -54,6 +54,7 @@ public class UIEastResizableContainer extends JPanel {
 
     private static final int DRAG_GAP_SIZE = 10;
     private Point dragPoint;
+    private boolean dragging;
 
     public UIEastResizableContainer() {
         this(new JPanel(), new JPanel());
@@ -71,12 +72,20 @@ public class UIEastResizableContainer extends JPanel {
             public void mousePressed(MouseEvent e) {
                 if (isEnableDrag(e)) {
                     dragPoint = e.getPoint();
+                    dragging = true;
                 }
             }
 
             @Override
             public void mouseDragged(MouseEvent e) {
-                resizePanel(e);
+                if (dragging) {
+                    resizePanel(e);
+                }
+            }
+
+            @Override
+            public void mouseReleased(MouseEvent e) {
+                dragging = false;
             }
         };