From 2d3de22150cac4ba35bfba16f9b157b9d93b572f Mon Sep 17 00:00:00 2001
From: Comfy Org PR Bot <snomiao+comfy-pr@gmail.com>
Date: Sun, 15 Mar 2026 04:17:48 +0900
Subject: [PATCH] [backport core/1.41] fix: clear stale widget slotMetadata on
 link disconnect (#9919)
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Backport of #9885 to `core/1.41`

Automatically created by backport workflow.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-9919-backport-core-1-41-fix-clear-stale-widget-slotMetadata-on-link-disconnect-3236d73d365081028353cbabd935e7a0)
by [Unito](https://www.unito.io)

Co-authored-by: Christian Byrne <cbyrne@comfy.org>
---
 .../graph/useGraphNodeManager.test.ts         | 26 +++++++++++++++++++
 src/composables/graph/useGraphNodeManager.ts  |  3 +--
 2 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/src/composables/graph/useGraphNodeManager.test.ts b/src/composables/graph/useGraphNodeManager.test.ts
index 39a25b2352..d441a9c529 100644
--- a/src/composables/graph/useGraphNodeManager.test.ts
+++ b/src/composables/graph/useGraphNodeManager.test.ts
@@ -238,6 +238,32 @@ describe('Widget slotMetadata reactivity on link disconnect', () => {
 
     expect(widgetData?.slotMetadata?.linked).toBe(false)
   })
+
+  it('clears stale slotMetadata when input no longer matches widget', async () => {
+    const { graph, node } = createWidgetInputGraph()
+    const { vueNodeData } = useGraphNodeManager(graph)
+
+    const nodeData = vueNodeData.get(String(node.id))!
+    const widgetData = nodeData.widgets!.find((w) => w.name === 'prompt')!
+
+    expect(widgetData.slotMetadata?.linked).toBe(true)
+
+    node.inputs[0].name = 'other'
+    node.inputs[0].widget = { name: 'other' }
+    node.inputs[0].link = null
+
+    graph.trigger('node:slot-links:changed', {
+      nodeId: node.id,
+      slotType: NodeSlotType.INPUT,
+      slotIndex: 0,
+      connected: false,
+      linkId: 42
+    })
+
+    await nextTick()
+
+    expect(widgetData.slotMetadata).toBeUndefined()
+  })
 })
 
 describe('Subgraph Promoted Pseudo Widgets', () => {
diff --git a/src/composables/graph/useGraphNodeManager.ts b/src/composables/graph/useGraphNodeManager.ts
index a5b346790f..f366c41dc3 100644
--- a/src/composables/graph/useGraphNodeManager.ts
+++ b/src/composables/graph/useGraphNodeManager.ts
@@ -467,8 +467,7 @@ export function useGraphNodeManager(graph: LGraph): GraphNodeManager {
 
     // Update only widgets with new slot metadata, keeping other widget data intact
     for (const widget of currentData.widgets ?? []) {
-      const slotInfo = slotMetadata.get(widget.slotName ?? widget.name)
-      if (slotInfo) widget.slotMetadata = slotInfo
+      widget.slotMetadata = slotMetadata.get(widget.slotName ?? widget.name)
     }
   }