Claim listing add-on breaks regular Ninja Form behavior

I added a standard Ninja “Contact Us” form on it’s own “Contact Us” page. The form sends the emails correctly and save to the database correctly but the submit button says “Processing” and the form doesn’t clear.

At Ninja Forms support suggestion I deactivated all plugins and reactivated one at a time while testing the form each time. With “Claim Listings” plugin disabled the form disapears and shows the submission success message (proper behavior). With “Claim Listings” enabled, the submit button continues to say “Processing”.

The “Claim Listing” button seems to be working correctly.

Admin Access in next post. This is a dev environment.