diff --git a/apps/client/src/features/editor/title-editor.tsx b/apps/client/src/features/editor/title-editor.tsx
index 33b71b0c..e695867f 100644
--- a/apps/client/src/features/editor/title-editor.tsx
+++ b/apps/client/src/features/editor/title-editor.tsx
@@ -154,7 +154,11 @@ export function TitleEditor({
 
   function handleTitleKeyDown(event: any) {
     if (!titleEditor || !pageEditor || event.shiftKey) return;
-
+    
+    // Prevent focus shift when IME composition is active 
+    // `keyCode === 229` is added to support Safari where `isComposing` may not be reliable
+    if (event.nativeEvent.isComposing || event.nativeEvent.keyCode === 229) return;
+    
     const { key } = event;
     const { $head } = titleEditor.state.selection;