diff --git a/frontend/src/components/workspace/input-box.tsx b/frontend/src/components/workspace/input-box.tsx
index b3b1a904..b2004b93 100644
--- a/frontend/src/components/workspace/input-box.tsx
+++ b/frontend/src/components/workspace/input-box.tsx
@@ -208,6 +208,7 @@ export function InputBox({
       if (!message.text) {
         return;
       }
+      setIsFocused(false);
       onSubmit?.(message);
     },
     [onSubmit, onStop, status],