JWT signature is different between response and request headers

I'm implementing an authentication API that uses JWT which is then stored in a cookie. The cookie is set correctly in the response header and it seems so in the request header. The problem is the signature of the access_token in the response and the one in the request are different. Therefore, upon validation, it fails.

As you can see in the image above, they're different. I'm confused why it's changed in the request header. Is this an intended behavior? If so, how do I put it back to its original signature? This is how I'm setting the cookie

atCookie := new(http.Cookie)
atCookie.Name = "access_token"
atCookie.Value = "my-access-token"

This is how I read it

c.Cookie("access_token").Value

I'm using https://github.com/golang-jwt/jwt. I think I followed everything from the documentation. I'm using Echo as the framework. I've been trying to figure this out for hours it would nice if someone can help me.

UPDATE
Turns out I just needed to set the cookie path.

atCookie.Path = "/"

Not sure if this correct though but it's able to save the cookie in the browser. It wasn't sending any cookie to the server at all. The Cookie header value is a mess as it's littered with cookies from other tabs so it added to the confusion.

The logs that you're showing come from a request to your login endpoint. You send one access token in a cookie to that endpoint, perform login, then issue a new access token and set it in the response header. I think this is a perfectly normal behaviour.