"Webflow always redirects a url from a url with a trailing slash to one without"
The above redirect is applied even if a manual redirect exists. This creates an unnecessary redirect chain.
Let's say I have added a manual redirect from /foo -> /bar. A visit to /foo/ generates the follow chain, /foo/ ->301-> /foo ->301-> /bar
It is not a major SEO issue, but it is an unnecessary one!
My suggestion is: If a manual redirect has been added, then ignore the first "remove trailing slash"-redirect and directly redirect according to the manual redirect.