release v1.22.0

packages/ui/src/components/chat/ChatContainer.tsx

@@ -748,7 +748,11 @@ export const ChatContainer: React.FC<ChatContainerProps> = ({
     // One gate per opened session; the scroll hook holds it until the
     // viewport is pinned to the end so the first visible frame is already
     // at the bottom.
-    const revealGate = React.useMemo(() => createTimelineRevealGate(), [currentSessionKey]);
+    const revealGateRef = React.useRef<{ key: string | null; gate: TimelineRevealGate } | null>(null);
+    if (revealGateRef.current?.key !== currentSessionKey) {
+        revealGateRef.current = { key: currentSessionKey, gate: createTimelineRevealGate() };
+    }
+    const revealGate = revealGateRef.current.gate;
     const chatColumnSession = React.useMemo<ChatColumnSession>(
         () => ({ sessionId: currentSessionId ?? null, directory: currentSessionId ? effectiveSessionDirectory ?? null : null }),
         [currentSessionId, effectiveSessionDirectory],

packages/ui/src/components/chat/MarkdownRendererImpl.tsx

@@ -962,7 +962,7 @@ const useMorphdomMarkdown = ({
       // or re-decorating ordinary blocks.
       refreshMermaidViewers();
     }
-  }, [containerRef, text, streaming, imageMode, ctx, refreshMermaidViewers]);
+  }, [containerRef, text, streaming, imageMode, ctx, refreshMermaidViewers, revealGate]);
 
   React.useEffect(() => () => {
     mermaidViewerRef.current?.cleanup();