diff --git a/designer-base/src/main/java/com/fr/design/ui/ModernUIPane.java b/designer-base/src/main/java/com/fr/design/ui/ModernUIPane.java
index 09fa2bbc0..16b09392f 100644
--- a/designer-base/src/main/java/com/fr/design/ui/ModernUIPane.java
+++ b/designer-base/src/main/java/com/fr/design/ui/ModernUIPane.java
@@ -196,13 +196,17 @@ public class ModernUIPane<T> extends BasicPane {
         private ModernUIPane<T> pane;
 
         public Builder() {
-            this(BrowserType.HEAVYWEIGHT);
         }
 
         public Builder(BrowserType browserType) {
             this.pane = new ModernUIPane<>(browserType);
         }
 
+        public Builder<T> init() {
+            this.pane = new ModernUIPane<>(BrowserType.HEAVYWEIGHT);
+            return this;
+        }
+
         public Builder<T> prepare(ScriptContextListener contextListener) {
             pane.browser.addScriptContextListener(contextListener);
             return this;
diff --git a/designer-base/src/main/java/com/fr/design/ui/compatible/ModernUIPaneFactory.java b/designer-base/src/main/java/com/fr/design/ui/compatible/ModernUIPaneFactory.java
index 68b8950f7..e6b13ce13 100644
--- a/designer-base/src/main/java/com/fr/design/ui/compatible/ModernUIPaneFactory.java
+++ b/designer-base/src/main/java/com/fr/design/ui/compatible/ModernUIPaneFactory.java
@@ -13,9 +13,9 @@ public class ModernUIPaneFactory {
     public static <T> ModernUIPane.Builder<T> modernUIPaneBuilder() {
 
         if (isV7()) {
-            return new NewModernUIPane.Builder<>();
+            return new NewModernUIPane.Builder<T>().init();
         } else {
-            return new ModernUIPane.Builder<>();
+            return new ModernUIPane.Builder<T>().init();
         }
 
     }
diff --git a/designer-base/src/main/java/com/fr/design/ui/compatible/NewModernUIPane.java b/designer-base/src/main/java/com/fr/design/ui/compatible/NewModernUIPane.java
index 0b56fc0ad..3c30afbf0 100644
--- a/designer-base/src/main/java/com/fr/design/ui/compatible/NewModernUIPane.java
+++ b/designer-base/src/main/java/com/fr/design/ui/compatible/NewModernUIPane.java
@@ -182,8 +182,7 @@ public class NewModernUIPane<T> extends ModernUIPane<T> {
     public void disposeBrowser() {
 
         if (browser != null) {
-            browser.close();
-            browser = null;
+            browser.engine().close();
         }
 
     }
@@ -204,7 +203,13 @@ public class NewModernUIPane<T> extends ModernUIPane<T> {
 
     public static class Builder<T> extends ModernUIPane.Builder<T> {
 
-        private NewModernUIPane<T> pane = new NewModernUIPane<>();
+        private NewModernUIPane<T> pane;
+
+        @Override
+        public ModernUIPane.Builder<T> init() {
+            this.pane = new NewModernUIPane<>();
+            return this;
+        }
 
         public NewModernUIPane.Builder<T> prepare(InjectJsCallback callback) {
             pane.browser.set(InjectJsCallback.class, callback);