Events Calendar widget: Spinning wheel with SiteOrigin page builder

I’m using SiteOrigin page builder to build a home page in a theme called IMNewsPro hosted at WP Engine.

I have an Events Calendar widget dropped into one of the zones in the page builder.

The calendar doesn’t completely load, and there is a spinning wheel.

I had a previous version of the site with an Events Calendar widget dropped into a sidebar on a blog posts home page, and there was no problem in this configuration.

I’ve gone through these steps:

1. Deactivated all plugins except Events Calendar
2. Switched to the Twenty Sixteen theme

Unfortunately this doesn’t really seem to help; the page resolves with a list of shortcodes.

When I reactivate only the SiteOrigin page builder, the calendar shows up again, but with the spinning wheel. So, it seems like the problem must be with the SiteOrigin page builder.

I’ve checked the developer console in Chrome and I don’t see any errors.

Here is the live site: https://northwest.motion.social/

Here is the staging site: http://motion8social.staging.wpengine.com/
(Which I’m messing around with…)

The only related topic I can find on the SiteOrigin support forums is this:

Page Builder plugin conflict with The Events Calendar

But it’s not clear whether there was a solution.

Thanks.