Redirects appending instead of redirecting

[JoeBerkley]

This is a bit of a weird one, heres the scenario I have

Redirect from /fromUrl
Redirect to toUrl

I then navigate to example.com/fromUrl and it redirects me to example.com/toUrl as expected.
However if I navigate to example.com/fromUrl/ I'll get redirected to example.com/fromUrl/toUrl