The sidebar (Netlify Icon) for Collaborative Deploy Previews is not showing on most pages of our site (e.g. https://deploy-preview-1--stelvioforlife.netlify.app/). The site is a NextJS app, using the Essential NextJS Plugin. Because most pages are rendered from Netlify Functions, I believe the sidebar is not injected there. On a static page, such as the 404, the bar does appear (https://deploy-preview-1--stelvioforlife.netlify.app/does-not-exist).
Am I correct in assuming that HTML output from Netlify Functions is not taken into account for injecting the sidebar functionality?
Happy to help in any way to further debug this issue.