Wonky Primary Sidebar widget on the Home page

Hello Wes,
URL: https://www.clevelandparkhistoricalsociety.org/dev/

I installed the Ambition Theme and started building out widgets for the home page.

When I go into Customizer > Front Page Content Section Display > “Show” content section, the content/sidebar displays just fine and all looks good.

But when I select “Hide” Content section, the Content section disappears, but the Primary Sidebar still appears (floated right). It looks broken and it shouldn’t be there at all.

I have not made any changes to the functions.php file or the front-page.php. And I’ve validated my code to make sure I don’t have an error there.

I’m stumped, and I don’t know how to make it go away.
Thank you,
Danna