Try fix problem with empty textbox

app.py

@@ -43,8 +43,11 @@ st.markdown(
 )
 
 # Define the placeholder globally (outside columns)
-placeholder = st.empty()
-placeholder.markdown(f'<div class="scrollable-div"><p>Welcome! I am your Adrega AI assistant</p></div>', unsafe_allow_html=True)
+if st.session_state.user_input:
+    placeholder = st.session_state.user_input
+else:
+    placeholder = st.empty()
+    placeholder.markdown(f'<div class="scrollable-div"><p>Welcome! I am your Adrega AI assistant</p></div>', unsafe_allow_html=True)
 
 def handle_submit():
     user_input = st.session_state.user_input