When using this theme and The Events Calendar Tickets Plus

When using Hello Elementor theme together with the current latest version of Modern Tribe's The Events Calendar with the Tickets Plus extension, a problem occurs should you wish to use "Collect Attendee Information" in NON-MODAL registration mode.

Using "modal registration" works fine.

It's only when you want to collect the attendee information during the WooCommerce checkout flow that it shows a "Page not found" error.

The browser Title Bar says something about "Auto-draft".

When using Twenty Twenty-One theme, this error does not occur.

Theme: Hello Elementor
Plugin : The Events Calendar by Modern Tribe
Extension: Tickets Plus
Needed plugin : WooCommerce

Settings :
Collect attendee information
Modal registration OFF
Page slug : irrelevant (tested)
Page template : irrelevant (tested)
Use a Page : irrelevant (tested)

Flow :
Event page, select tickets, add to cart. View cart - > go to Checkout - > Page not found
Expect : Page to collect Attendee Information

Theme error tested? Yes, works fine with Twenty Twenty-One