diff --git a/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx b/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
index ad2ebaa39..72cd5b777 100644
--- a/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
+++ b/apps/ai-game-creator-shell/src/components/ChatMarkdownMessage/index.tsx
@@ -20,7 +20,9 @@ function normalizeMarkdownBlankLines(text: string) {
   return text
     .split(/(```[\s\S]*?```)/g)
     .map((part, index) =>
-      index % 2 === 1 ? part : part.replace(/\n{3,}/g, '\n\n'),
+      index % 2 === 1
+        ? part
+        : part.replace(/[ \t]*\n(?:[ \t]*\n){2,}/g, '\n\n'),
     )
     .join('');
 }