Update app.py

app.py

@@ -1498,6 +1498,8 @@ if st.session_state.framework == "dash":
                         with col1:
                             if st.button(f"🗂 {truncated_preview}", key=val):
                                 load_chat_history(chat_id)
+                                st.session_state.show_overlay = False
+
 
                         with col2:
                             if st.button("🗑️", key=delete_key):