diff --git a/src/pages/cluster-management/components/k8s-pod-spec.tsx b/src/pages/cluster-management/components/k8s-pod-spec.tsx
index c2c127ab..75b3afef 100644
--- a/src/pages/cluster-management/components/k8s-pod-spec.tsx
+++ b/src/pages/cluster-management/components/k8s-pod-spec.tsx
@@ -184,6 +184,16 @@ const cleanK8sOptions = (opts: any) => {
       ({ sourceType, ...rest }: any) => rest
     );
   }
+  // The edit form always seeds k8s_options.volumeMounts to [] even when the
+  // saved cluster had no value, so an absent field would otherwise read as a
+  // change the moment the drawer opens. Drop empty top-level arrays on both
+  // sides: "absent" and "empty list" both mean nothing configured. A
+  // non-empty -> empty edit is still detected, since only the empty side drops.
+  Object.keys(cloned).forEach((key) => {
+    if (Array.isArray(cloned[key]) && cloned[key].length === 0) {
+      delete cloned[key];
+    }
+  });
   return JSON.parse(JSON.stringify(cloned));
 };
 
diff --git a/src/pages/cluster-management/step-forms/advance-config.tsx b/src/pages/cluster-management/step-forms/advance-config.tsx
index a14ceb12..9fb924e5 100644
--- a/src/pages/cluster-management/step-forms/advance-config.tsx
+++ b/src/pages/cluster-management/step-forms/advance-config.tsx
@@ -25,7 +25,6 @@ const Title = styled.div`
   display: flex;
   align-items: center;
   justify-content: space-between;
-  background-color: var(--ant-color-bg-container);
   font-weight: 500;
   font-size: 14px;
   padding-top: 0px;