TWebMainMenu - How can I always have it dropped?

I ma using TWebMainMenu as a side menu. It is constrained in a panel that is 250px wide.

I set the Responsive to 500 and was expecting it to always be open. It isn't. Is there a way to keep it open? It closes as soon as a selection is made.

This is a TWebMainMenu? Not a TWebSideMenu?

Thats right. I could not resolve the html/css for the TWebSideMenu with my existing form. So I am using the TWebMainMenu until I have more time. The client is doing data entry now, so it needs to be workable.

I can fiddle later.