diff --git a/packages/dashboard/app/components/ChatView.css b/packages/dashboard/app/components/ChatView.css
index 11f4b8d1b..340159395 100644
--- a/packages/dashboard/app/components/ChatView.css
+++ b/packages/dashboard/app/components/ChatView.css
@@ -1105,8 +1105,14 @@
   .chat-thread[style*="--keyboard-overlap"] {
     height: calc(var(--vv-height, calc(100dvh - var(--keyboard-overlap, 0px))) - var(--header-height));
     max-height: calc(var(--vv-height, calc(100dvh - var(--keyboard-overlap, 0px))) - var(--header-height));
-    transform: translateY(var(--vv-offset-top, 0px));
-    will-change: transform;
+    /* The previous translateY(--vv-offset-top) compensated for iOS
+       shifting the visual viewport on focus, but it also amplified
+       jitter during a swipe — visualViewport scroll events update
+       --vv-offset-top rapidly, the transform follows, and the thread
+       jutters / shifts ~300px / exposes the body background. Dropping
+       the transform lets the browser place the thread where iOS
+       expects; height-shrink to vv-height still keeps it inside the
+       visible area. */
   }
 
   /* On mobile, the "New Chat" affordance uses a full-width pinned footer. */