Summary

Expander in sidebar cuts off sliders and potentially other stuff

Steps to reproduce

Run the following code

import streamlit as st

sidebar_expander = st.sidebar.beta_expander("Bad sliders underneath!")
with sidebar_expander:
    st.slider("Bad layout slider 1", 0, 100, value=0)
    st.slider("Bad layout slider 2", 0, 100, value=(0,100))

st.sidebar.slider("Good layout slider")

Expected behavior:

Sliders appear nicely under the expander

Actual behavior:

Sliders ends are cut off under the expander (see picture)

Is this a regression?

No

Debug info

• Streamlit version: 0.69.1
• Python version: 3.8.2
• Using PipEnv
• OS version: Windows 10
• Browser version: Firefox and Chrome, recent versions

Additional information

May also happen in containers outside of sidebar? Have not checked it though..