Form submit works, but button stuck spinning - any ideas?

Hi there, I set up a standard bricks form to collect email addresses on

When I fill out the form and click submit, I receive an email in my inbox. But I never see the confirmation message on the site. Instead, the submit button shows a spinning icon that never goes away.

I tried setting up a new blank page with a contact form and it worked just fine. So it is an issue specific to the homepage. Any ideas what’s going on?

Update: I tried duplicating the homepage. On the duplicated page, the form worked great. I then set the duplicated page to be the homepage. It still worked—once. Now I am back to the spinning icon.