From 8a10e9fc932e069620aab675e39fae2b137d9473 Mon Sep 17 00:00:00 2001
From: Vikhyath Mondreti <vikhyath@simstudio.ai>
Date: Fri, 6 Feb 2026 10:14:41 -0800
Subject: [PATCH] improvement(preview): nested workflow snapshots/preview when
 not executed

---
 .../[workspaceId]/w/components/preview/preview.tsx          | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/apps/sim/app/workspace/[workspaceId]/w/components/preview/preview.tsx b/apps/sim/app/workspace/[workspaceId]/w/components/preview/preview.tsx
index 816e31526..49293b47d 100644
--- a/apps/sim/app/workspace/[workspaceId]/w/components/preview/preview.tsx
+++ b/apps/sim/app/workspace/[workspaceId]/w/components/preview/preview.tsx
@@ -31,6 +31,7 @@ interface BlockExecutionData {
   /** Child trace spans for nested workflow blocks */
   children?: TraceSpan[]
   childWorkflowSnapshotId?: string
+  childWorkflowName?: string
 }
 
 /** Represents a level in the workflow navigation stack */
@@ -87,6 +88,7 @@ export function buildBlockExecutions(spans: TraceSpan[]): Record<string, BlockEx
 
   for (const span of allBlockSpans) {
     if (span.blockId && !blockExecutionMap[span.blockId]) {
+      const output = span.output as Record<string, unknown> | undefined
       blockExecutionMap[span.blockId] = {
         input: redactApiKeys(span.input || {}),
         output: redactApiKeys(span.output || {}),
@@ -94,6 +96,8 @@ export function buildBlockExecutions(spans: TraceSpan[]): Record<string, BlockEx
         durationMs: span.duration || 0,
         children: span.children,
         childWorkflowSnapshotId: span.childWorkflowSnapshotId,
+        childWorkflowName:
+          typeof output?.childWorkflowName === 'string' ? output.childWorkflowName : undefined,
       }
     }
   }
@@ -192,7 +196,7 @@ export function Preview({
       const childTraceSpans = extractChildTraceSpans(blockExecution)
       const childBlockExecutions = buildBlockExecutions(childTraceSpans)
 
-      const workflowName = childWorkflowState.metadata?.name || 'Nested Workflow'
+      const workflowName = blockExecution?.childWorkflowName || 'Nested Workflow'
 
       setWorkflowStack((prev) => [
         ...prev,