Graphviz graph with different engine/layout (e.g., neato, circo) are not rendered correspondingly in the streamlit 0.78.0/0.79.0

Using Streamlit
#1

When I try different layout/engine of the graphviz graph (e.g., neato, circo, see here: https://graphviz.org/), the streamlit seems not render the graph correspondingly. Any suggestions?