diff --git a/src/frontend/src/content/docs/whats-new/aspire-13-5.mdx b/src/frontend/src/content/docs/whats-new/aspire-13-5.mdx
index 7b785407a..f2e99486d 100644
--- a/src/frontend/src/content/docs/whats-new/aspire-13-5.mdx
+++ b/src/frontend/src/content/docs/whats-new/aspire-13-5.mdx
@@ -167,6 +167,7 @@ The Aspire CLI is now available as an npm package (`@microsoft/aspire-cli`), pro
 - **Friendly health check error messages**: Health check failures now display concise, actionable messages instead of raw exception stacks.
 - **Fixed telemetry streaming with resource filters**: Streams now wait for resources to appear before returning empty results.
 - **Fixed duplicate replica display names**: Dashboard now uses the last 8 characters of the service.instance.id GUID to prevent collisions.
+- **Trace detail span pane closes on navigation**: When navigating between traces (for example, using the browser's Back button or following a span link to another trace), the span detail pane now correctly closes instead of persisting with a stale span from the previous trace. If the destination URL includes a `?spanId=` query parameter, the correct span is automatically re-opened.
 
 ## 🧩 VS Code extension enhancements