diff --git a/src/scripts/app.ts b/src/scripts/app.ts
index 3db03cc39..1e9df767e 100644
--- a/src/scripts/app.ts
+++ b/src/scripts/app.ts
@@ -63,6 +63,7 @@ import { ExtensionManager } from '@/types/extensionTypes'
 import type { NodeExecutionId } from '@/types/nodeIdentification'
 import { ColorAdjustOptions, adjustColor } from '@/utils/colorUtil'
 import { graphToPrompt } from '@/utils/executionUtil'
+import { forEachNode } from '@/utils/graphTraversalUtil'
 import {
   getNodeByExecutionId,
   triggerCallbackOnAllNodes
@@ -1700,12 +1701,13 @@ export class ComfyApp {
     for (const nodeId in defs) {
       this.registerNodeDef(nodeId, defs[nodeId])
     }
-    for (const node of this.graph.nodes) {
+    // Refresh combo widgets in all nodes including those in subgraphs
+    forEachNode(this.graph, (node) => {
       const def = defs[node.type]
       // Allow primitive nodes to handle refresh
       node.refreshComboInNode?.(defs)
 
-      if (!def?.input) continue
+      if (!def?.input) return
 
       if (node.widgets) {
         const nodeInputs = def.input
@@ -1732,7 +1734,7 @@ export class ComfyApp {
           }
         }
       }
-    }
+    })
 
     await useExtensionService().invokeExtensionsAsync(
       'refreshComboInNodes',