Rewriting CPTUI Post Slug

I am attempting to remove the post type slug from the url from:
url.com/post-type-slug/post-name
to
url.com/post-name

So I’ve set the following:

'rewrite' => true
'slug' => '/'

And it works. My posts in the custom post is now rewritten to:
url.com/post-name

But is there any issues with this setup other than the conflicting permalinks with post and pages if they use the same post name?

Repost: https://ww.wp.xz.cn/support/topic/removing-post-type-slug
Because I’m actually using CPTUI for this change.

https://ww.wp.xz.cn/plugins/custom-post-type-ui/