Dynamic route takes precedence over Predefined route when trailingSlash is true

[shubuu97]

I'm using dynamic route where I have two files, [...slug].js and blog.js. So, ideally /blog should render content of blog.js file and any other route render content of '[...slug].js' which is working fine but as soon as I add trailingSlash: true, in next.config.js. It renders content of [...slug].js for all the routes.

It is happening for CSR only.

Repo: https://github.com/shubuu97/next_trailingslash_issue

• Version of Next.js: v^9.5.3
• Version of Node.js: v12.17.0