diff --git a/src/components/rightSidePanel/RightSidePanel.vue b/src/components/rightSidePanel/RightSidePanel.vue
index 505e58b74..f991f94ea 100644
--- a/src/components/rightSidePanel/RightSidePanel.vue
+++ b/src/components/rightSidePanel/RightSidePanel.vue
@@ -106,7 +106,7 @@ const hasContainerInternalError = computed(() => {
   if (allErrorExecutionIds.value.length === 0) return false
   return selectedNodes.value.some((node) => {
     if (!(node instanceof SubgraphNode || isGroupNode(node))) return false
-    return executionErrorStore.hasInternalErrorForNode(node.id)
+    return executionErrorStore.isContainerWithInternalError(node)
   })
 })
 
diff --git a/src/components/rightSidePanel/errors/useErrorGroups.ts b/src/components/rightSidePanel/errors/useErrorGroups.ts
index a4947d783..ace8299d4 100644
--- a/src/components/rightSidePanel/errors/useErrorGroups.ts
+++ b/src/components/rightSidePanel/errors/useErrorGroups.ts
@@ -13,6 +13,7 @@ import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
 
 import {
   getNodeByExecutionId,
+  getExecutionIdByNode,
   getRootParentNode
 } from '@/utils/graphTraversalUtil'
 import { resolveNodeDisplayName } from '@/utils/nodeTitleUtil'
@@ -20,6 +21,7 @@ import { isLGraphNode } from '@/utils/litegraphUtil'
 import { isGroupNode } from '@/utils/executableGroupNodeDto'
 import { st } from '@/i18n'
 import type { ErrorCardData, ErrorGroup, ErrorItem } from './types'
+import type { NodeExecutionId } from '@/types/nodeIdentification'
 import { isNodeExecutionId } from '@/types/nodeIdentification'
 
 const PROMPT_CARD_ID = '__prompt__'
@@ -200,26 +202,30 @@ export function useErrorGroups(
   const selectedNodeInfo = computed(() => {
     const items = canvasStore.selectedItems
     const nodeIds = new Set<string>()
-    const containerIds = new Set<string>()
+    const containerExecutionIds = new Set<NodeExecutionId>()
 
     for (const item of items) {
       if (!isLGraphNode(item)) continue
       nodeIds.add(String(item.id))
-      if (item instanceof SubgraphNode || isGroupNode(item)) {
-        containerIds.add(String(item.id))
+      if (
+        (item instanceof SubgraphNode || isGroupNode(item)) &&
+        app.rootGraph
+      ) {
+        const execId = getExecutionIdByNode(app.rootGraph, item)
+        if (execId) containerExecutionIds.add(execId)
       }
     }
 
     return {
       nodeIds: nodeIds.size > 0 ? nodeIds : null,
-      containerIds
+      containerExecutionIds
     }
   })
 
   const isSingleNodeSelected = computed(
     () =>
       selectedNodeInfo.value.nodeIds?.size === 1 &&
-      selectedNodeInfo.value.containerIds.size === 0
+      selectedNodeInfo.value.containerExecutionIds.size === 0
   )
 
   const errorNodeCache = computed(() => {
@@ -238,8 +244,9 @@ export function useErrorGroups(
     const graphNode = errorNodeCache.value.get(executionNodeId)
     if (graphNode && nodeIds.has(String(graphNode.id))) return true
 
-    for (const containerId of selectedNodeInfo.value.containerIds) {
-      if (executionNodeId.startsWith(`${containerId}:`)) return true
+    for (const containerExecId of selectedNodeInfo.value
+      .containerExecutionIds) {
+      if (executionNodeId.startsWith(`${containerExecId}:`)) return true
     }
 
     return false
diff --git a/src/components/rightSidePanel/parameters/SectionWidgets.vue b/src/components/rightSidePanel/parameters/SectionWidgets.vue
index d6427091c..9bd469b0f 100644
--- a/src/components/rightSidePanel/parameters/SectionWidgets.vue
+++ b/src/components/rightSidePanel/parameters/SectionWidgets.vue
@@ -121,7 +121,7 @@ const hasContainerInternalError = computed(() => {
     targetNode.value instanceof SubgraphNode || isGroupNode(targetNode.value)
   if (!isContainer) return false
 
-  return executionErrorStore.hasInternalErrorForNode(targetNode.value.id)
+  return executionErrorStore.isContainerWithInternalError(targetNode.value)
 })
 
 const nodeHasError = computed(() => {
diff --git a/src/renderer/extensions/vueNodes/components/LGraphNode.vue b/src/renderer/extensions/vueNodes/components/LGraphNode.vue
index 1571640bc..aff058570 100644
--- a/src/renderer/extensions/vueNodes/components/LGraphNode.vue
+++ b/src/renderer/extensions/vueNodes/components/LGraphNode.vue
@@ -342,7 +342,9 @@ const hasAnyError = computed((): boolean => {
     hasExecutionError.value ||
     nodeData.hasErrors ||
     error ||
-    (executionErrorStore.lastNodeErrors?.[nodeData.id]?.errors.length ?? 0) > 0
+    executionErrorStore.getNodeErrors(nodeLocatorId.value) ||
+    (lgraphNode.value &&
+      executionErrorStore.isContainerWithInternalError(lgraphNode.value))
   )
 })
 
diff --git a/src/stores/executionErrorStore.ts b/src/stores/executionErrorStore.ts
index e7388390c..e93335bbf 100644
--- a/src/stores/executionErrorStore.ts
+++ b/src/stores/executionErrorStore.ts
@@ -10,11 +10,13 @@ import type {
   PromptError
 } from '@/schemas/apiSchema'
 import type { NodeId } from '@/platform/workflow/validation/schemas/workflowSchema'
-import type { NodeLocatorId } from '@/types/nodeIdentification'
+import type { LGraphNode } from '@/lib/litegraph/src/litegraph'
+import type { NodeExecutionId, NodeLocatorId } from '@/types/nodeIdentification'
 import {
   executionIdToNodeLocatorId,
   forEachNode,
-  getNodeByExecutionId
+  getNodeByExecutionId,
+  getExecutionIdByNode
 } from '@/utils/graphTraversalUtil'
 
 /**
@@ -186,9 +188,32 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
     return nodeError.errors.some((e) => e.extra_info?.input_name === slotName)
   }
 
-  function hasInternalErrorForNode(nodeId: string | number): boolean {
-    const prefix = `${nodeId}:`
-    return allErrorExecutionIds.value.some((id) => id.startsWith(prefix))
+  /**
+   * Set of all execution ID prefixes derived from active error nodes,
+   * including the error nodes themselves.
+   *
+   * Example: error at "65:70:63" → Set { "65", "65:70", "65:70:63" }
+   */
+  const errorAncestorExecutionIds = computed<Set<NodeExecutionId>>(() => {
+    const ids = new Set<NodeExecutionId>()
+
+    for (const executionId of allErrorExecutionIds.value) {
+      const parts = executionId.split(':')
+      // Add every prefix including the full ID (error leaf node itself)
+      for (let i = 1; i <= parts.length; i++) {
+        ids.add(parts.slice(0, i).join(':'))
+      }
+    }
+
+    return ids
+  })
+
+  /** True if the node has errors inside it at any nesting depth. */
+  function isContainerWithInternalError(node: LGraphNode): boolean {
+    if (!app.rootGraph) return false
+    const execId = getExecutionIdByNode(app.rootGraph, node)
+    if (!execId) return false
+    return errorAncestorExecutionIds.value.has(execId)
   }
 
   /**
@@ -275,6 +300,7 @@ export const useExecutionErrorStore = defineStore('executionError', () => {
     // Lookup helpers
     getNodeErrors,
     slotHasError,
-    hasInternalErrorForNode
+    errorAncestorExecutionIds,
+    isContainerWithInternalError
   }
 })
diff --git a/src/utils/graphTraversalUtil.ts b/src/utils/graphTraversalUtil.ts
index 64a33b660..adc411257 100644
--- a/src/utils/graphTraversalUtil.ts
+++ b/src/utils/graphTraversalUtil.ts
@@ -331,6 +331,35 @@ export function getNodeByExecutionId(
   return targetGraph.getNodeById(localNodeId) || null
 }
 
+/**
+ * Returns the execution ID for a node relative to the root graph.
+ *
+ * Root-level nodes return their ID directly (e.g. "42").
+ * Nodes inside subgraphs return a colon-separated chain (e.g. "65:70:63").
+ *
+ * @param rootGraph - The root graph to resolve from
+ * @param node - The node whose execution ID to compute
+ * @returns The execution ID string, or null if the node has no graph
+ */
+export function getExecutionIdByNode(
+  rootGraph: LGraph,
+  node: LGraphNode
+): NodeExecutionId | null {
+  if (!node.graph) return null
+
+  if (node.graph === rootGraph || node.graph.isRootGraph) {
+    return String(node.id)
+  }
+
+  const parentPath = findPartialExecutionPathToGraph(
+    node.graph as LGraph,
+    rootGraph
+  )
+  if (parentPath === undefined) return null
+
+  return `${parentPath}:${node.id}`
+}
+
 /**
  * Get a node by its locator ID from anywhere in the graph hierarchy.
  * Locator IDs use UUID format like "uuid:nodeId" for subgraph nodes.