From ecd3237b184e87af5d744a9dc28422cc1eb68e1a Mon Sep 17 00:00:00 2001
From: AKolenda <akole779@mtroyal.ca>
Date: Fri, 25 Sep 2026 21:38:16 -0600
Subject: [PATCH] fix(mobile): running threads open at the latest message
 (#13530)

---
 apps/mobile/src/features/threads/ThreadFeed.tsx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/apps/mobile/src/features/threads/ThreadFeed.tsx b/apps/mobile/src/features/threads/ThreadFeed.tsx
index 20848cd2ad103b4490f2f63e77e0f96b1eed409e..83b0bef9c0228e32861cadc6302ed2a75cb033ef 100644
--- a/apps/mobile/src/features/threads/ThreadFeed.tsx
+++ b/apps/mobile/src/features/threads/ThreadFeed.tsx
@@ -2477,7 +2477,10 @@ export const ThreadFeed = memo(function ThreadFeed(props: ThreadFeedProps) {
   // content-inset override. Seed the fresh instance synchronously with the
   // current overlay height before the scroll integration's next reaction;
   // on Android the declarative contentInset floor covers this same window.
-  const listMountKey = `${feedThreadKey}:${presentedFeed.length === 0 ? "empty" : "filled"}`;
+  // The thinking row a running thread shows while its messages load is not
+  // content: the list must still remount, and so open at the end, when they
+  // arrive.
+  const listMountKey = `${feedThreadKey}:${presentedFeed.some((entry) => entry.type !== "thinking") ? "filled" : "empty"}`;
   useLayoutEffect(() => {
     const bottom = props.contentInsetEndAdjustment.value;
     if (bottom > 0) {
-- 
2.54.0