From b485f7cf64118fc8729181f46fe5e2edd47bea43 Mon Sep 17 00:00:00 2001
From: "Sebastian \"Sebbie\" Silbermann" <sebastian.silbermann@vercel.com>
Date: Mon, 20 Oct 2025 00:47:27 +0200
Subject: [PATCH] [DevTools] Don't attach filtered IO to grandparent Suspense
 (#34916)

---
 packages/react-devtools-shared/src/backend/fiber/renderer.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/react-devtools-shared/src/backend/fiber/renderer.js b/packages/react-devtools-shared/src/backend/fiber/renderer.js
index 4dd4a619cb..4a61fba652 100644
--- a/packages/react-devtools-shared/src/backend/fiber/renderer.js
+++ b/packages/react-devtools-shared/src/backend/fiber/renderer.js
@@ -2862,7 +2862,10 @@ export function attach(
     let parentInstance = reconcilingParent;
     while (
       parentInstance.kind === FILTERED_FIBER_INSTANCE &&
-      parentInstance.parent !== null
+      parentInstance.parent !== null &&
+      // We can't move past the parent Suspense node.
+      // The Suspense node holding async info must be a parent of the devtools instance (or the instance itself)
+      parentInstance !== parentSuspenseNode.instance
     ) {
       parentInstance = parentInstance.parent;
     }