Javascript Forms API loading forms more than once in static nextjs deploy

Hello Marketo Community, 

My team is currently trying to statically deploy a nextjs app. We are using the Javascript Forms API with the standard loadForm method. On the current live site, this works perfectly: 

Scroll to bottom of page to see form

techstars.com/ecosystem-development

However, when we statically deploy to a staging environment, this same form will load twice, and the measures we've taken to remove styles also break. For security reasons, I cannot share this staging site URL. 

I have followed the fix mentioned here, which is to use the formReady method to remove the id from the form element, so the inputs cannot be appended a second time. This works wonderfully locally, but when we export and deploy the static build, the duplicate render still happens. 

I know this is a long shot, but it feels like this a react lifecycle and or nextjs related issue. Hoping someone has some insight because I'm all out of ideas. 

Any help is greatly appreciated!