We have a Next.js (v13) on Netlify, which recently the router for single types seems to not work (resulting in 404) and requires /en to the path.
Here’s an example: https://643e6ae0ca598028347c35b7--freestyle-site.netlify.app/work/thecaravanandmotorhomeclub
[work] = page
[work/*] = single type
In Next.js, we have locale in config as
This has always been in, and worked fine.
So to help resolve it, we removed the defaultLocale, which then made any single page result in 404.
We know this is a Netlify route issue, as we uploaded the same codebase to Vercel which works fine.