diff --git a/deepfence_frontend/packages/ui-components/src/components/modal/SlidingModal.tsx b/deepfence_frontend/packages/ui-components/src/components/modal/SlidingModal.tsx
index 4d4a61e64f..d717289f33 100644
--- a/deepfence_frontend/packages/ui-components/src/components/modal/SlidingModal.tsx
+++ b/deepfence_frontend/packages/ui-components/src/components/modal/SlidingModal.tsx
@@ -97,7 +97,7 @@ export const SlidingModal: FC<ModalProps> = ({
             'overflow-hidden focus:outline-none',
             'bg-white text-gray-900',
             'dark:bg-bg-side-panel dark:text-text-text-and-icon',
-            'dark:border-bg-grid-border',
+            'dark:border-bg-grid-border isolate',
             {
               '-left-[100%] border-r': direction === 'left',
               '-right-[100%] border-l': direction === 'right',
diff --git a/deepfence_frontend/packages/ui-components/src/components/select/Combobox.tsx b/deepfence_frontend/packages/ui-components/src/components/select/Combobox.tsx
index d0a447c610..7c0677d6b6 100644
--- a/deepfence_frontend/packages/ui-components/src/components/select/Combobox.tsx
+++ b/deepfence_frontend/packages/ui-components/src/components/select/Combobox.tsx
@@ -450,7 +450,7 @@ const ContentWrapper = ({
   children: ReactNode;
 }) => {
   if (noPortal) {
-    return <div>{children}</div>;
+    return <div className="isolate z-10">{children}</div>;
   }
   return <Portal>{children}</Portal>;
 };
diff --git a/deepfence_frontend/packages/ui-components/src/components/select/Listbox.tsx b/deepfence_frontend/packages/ui-components/src/components/select/Listbox.tsx
index 61432109cf..7bc1a7958c 100644
--- a/deepfence_frontend/packages/ui-components/src/components/select/Listbox.tsx
+++ b/deepfence_frontend/packages/ui-components/src/components/select/Listbox.tsx
@@ -388,7 +388,7 @@ const ContentWrapper = ({
   children: ReactNode;
 }) => {
   if (noPortal) {
-    return <div>{children}</div>;
+    return <div className="isolate z-10">{children}</div>;
   }
   return <Portal>{children}</Portal>;
 };