St.fragment intended behavior? selectbox change outside of fragment doesn't impact inside all data inside fragment

Using Streamlit
,
1

Hello,

In my application (1.37.1), i have a selectbox with names. Further down there is a st.fragment function to render different aggregations of data with a st.radio option to choose the aggregation.

When the page renders for a given selectbox choice, the first render of the st.fragment function is correct, but when picking a different aggregation in the st.radio picker, the data now reflects a different product.

Is this intended behavior or a known issue? The purpose of using @st.fragment is to have the chart interaction be fast and not cause rerunning the entire page.

simplified code sample:

product = st.selectbox('Choose Product',products)

df = pullDF(product)
df2 = pullDF2(product)

@st.fragment
def renderChart():
	aggregation = st.radio('Choose Aggregation',aggregations)

	if aggregation =='Agg1':
		fig = px.line(df)
		st.plotly_chart(fig)
	elif aggregation =='Agg2':
		fig = px.line(df2)
		st.plotly_chart(fig)

renderChart()

A workaround i think i can use is pushing df into a st.session_state.df and then rendering that in the @st.fragment.