From b7a06e193952a66a8efa07feb4e105f44bf7ea8b Mon Sep 17 00:00:00 2001
From: Shoubhit Dash <shoubhit2005@gmail.com>
Date: Fri, 27 Mar 2026 01:13:30 +0530
Subject: fix(ui): reduce markdown jank while responses stream (#19304)

---
 packages/app/src/pages/session/message-timeline.tsx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'packages/app/src/pages')

diff --git a/packages/app/src/pages/session/message-timeline.tsx b/packages/app/src/pages/session/message-timeline.tsx
index 33437ce9c..a246abaf3 100644
--- a/packages/app/src/pages/session/message-timeline.tsx
+++ b/packages/app/src/pages/session/message-timeline.tsx
@@ -943,7 +943,10 @@ export function MessageTimeline(props: {
                         "min-w-0 w-full max-w-full": true,
                         "md:max-w-200 2xl:max-w-[1000px]": props.centered,
                       }}
-                      style={{ "content-visibility": "auto", "contain-intrinsic-size": "auto 500px" }}
+                      style={{
+                        "content-visibility": active() ? undefined : "auto",
+                        "contain-intrinsic-size": active() ? undefined : "auto 500px",
+                      }}
                     >
                       <Show when={commentCount() > 0}>
                         <div class="w-full px-4 md:px-5 pb-2">
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