diff --git a/src/components/builder/AppModeWidgetList.vue b/src/components/builder/AppModeWidgetList.vue
index 8ab4e9bc4f..ec60b254ec 100644
--- a/src/components/builder/AppModeWidgetList.vue
+++ b/src/components/builder/AppModeWidgetList.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import { useEventListener } from '@vueuse/core'
-import { computed, provide, shallowRef } from 'vue'
+import { computed, provide, shallowRef, triggerRef } from 'vue'
 
 import { useAppModeWidgetResizing } from '@/components/builder/useAppModeWidgetResizing'
 import { useI18n } from 'vue-i18n'
@@ -63,6 +63,9 @@ useEventListener(
   'configured',
   () => (graphNodes.value = app.rootGraph.nodes)
 )
+useEventListener(app.rootGraph.events, 'node:slot-label:changed', () =>
+  triggerRef(graphNodes)
+)
 
 const mappedSelections = computed((): WidgetEntry[] => {
   void graphNodes.value
diff --git a/src/core/graph/subgraph/migration/repairValueWidget.ts b/src/core/graph/subgraph/migration/repairValueWidget.ts
index 344cc23018..9fb2e9b0c3 100644
--- a/src/core/graph/subgraph/migration/repairValueWidget.ts
+++ b/src/core/graph/subgraph/migration/repairValueWidget.ts
@@ -121,6 +121,8 @@ function repairCreateSubgraphInput(
   const slotType = String(slot.type ?? sourceWidget.type ?? '*')
 
   const newSubgraphInput = subgraph.addInput(desiredName, slotType)
+  // Mirror LGraphNode.configure: input.label → widget.label propagation.
+  if (slot.label !== undefined) newSubgraphInput.label = slot.label
   const link = newSubgraphInput.connect(slot, sourceNode)
   if (!link) {
     subgraph.removeInput(newSubgraphInput)
diff --git a/src/utils/widgetUtil.test.ts b/src/utils/widgetUtil.test.ts
index ddff96a42f..3713c837b5 100644
--- a/src/utils/widgetUtil.test.ts
+++ b/src/utils/widgetUtil.test.ts
@@ -128,21 +128,6 @@ describe('renameWidget', () => {
     expect(promotedWidget.label).toBe('Renamed')
   })
 
-  it('updates _subgraphSlot.label when input has a subgraph slot', () => {
-    const widget = makeWidget({ name: 'seed' })
-    const subgraphSlot = { label: undefined as string | undefined }
-    const input = fromAny<INodeInputSlot, unknown>({
-      name: 'seed',
-      widget: { name: 'seed' },
-      _subgraphSlot: subgraphSlot
-    })
-    const node = makeNode({ inputs: [input] })
-
-    renameWidget(widget, node, 'New Label')
-
-    expect(subgraphSlot.label).toBe('New Label')
-  })
-
   it('does not resolve promoted widget source for non-subgraph node without parents', () => {
     const promotedWidget = makeWidget({
       name: 'seed',
diff --git a/src/utils/widgetUtil.ts b/src/utils/widgetUtil.ts
index d11663ab0a..a627a3024d 100644
--- a/src/utils/widgetUtil.ts
+++ b/src/utils/widgetUtil.ts
@@ -1,7 +1,6 @@
 import { isPromotedWidgetView } from '@/core/graph/subgraph/promotedWidgetTypes'
 import { resolvePromotedWidgetSource } from '@/core/graph/subgraph/resolvePromotedWidgetSource'
 import type { LGraphNode } from '@/lib/litegraph/src/LGraphNode'
-import type { ISubgraphInput } from '@/lib/litegraph/src/interfaces'
 import type { SubgraphNode } from '@/lib/litegraph/src/subgraph/SubgraphNode'
 import { NodeSlotType } from '@/lib/litegraph/src/types/globalEnums'
 import type { IBaseWidget } from '@/lib/litegraph/src/types/widgets'
@@ -78,11 +77,6 @@ export function renameWidget(
   widget.label = newLabel || undefined
   if (input) {
     input.label = newLabel || undefined
-
-    const subgraphSlot = (input as Partial<ISubgraphInput>)._subgraphSlot
-    if (subgraphSlot) {
-      subgraphSlot.label = newLabel || undefined
-    }
   }
 
   // Fires for all node types; listeners guard against non-subgraph nodes.