Update app.py

app.py

@@ -50,8 +50,6 @@ if query_params:
 selected_option = st.radio(
     "Param", options, index=ix, key="query", on_change=update_params
 )
-st.experimental_set_query_params(option=selected_option)
-
 
 # Text Input, check the query params  set the text input to query value if in session
 try:
@@ -63,6 +61,8 @@ except: # catch exception and set query param to predefined value
     query_params = st.experimental_get_query_params()
     query_option = query_params['query'][0]
 
+st.experimental_set_query_params(option=selected_option)
+