Spring boot app behind nginx redirects improperly

I'm attempting to run my spring boot app behind nginx (on a dev machine), using a config file I found at Running a Spring Boot app behind nginx. Firefox however says it isn’t redirecting properly, and the Network tab in the javascript console confirms many 302 redirects.

This is nginx.conf I'm using:

http {include       mime.types;default_type  application/octet-stream;log_format  main  '$remote_addr - $remote_user [$time_local] "$request"''$status $body_bytes_sent "$http_referer"''"$http_user_agent""$http_x_forwarded_for"';keepalive_timeout  65;upstream tomcat {    server localhost:8080;}server {    listen       80;    server_name  localhost;    access_log  /var/log/nginx/localhost.access.log  main;    location / {            proxy_pass              $scheme://tomcat/$request_uri;            proxy_redirect          off;            proxy_set_header        X-Real-IP $remote_addr;            proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;            proxy_set_header        Host $http_host;    }}

Indeed, the mentioned log file has many lines like this:

127.0.0.1 - - [14/Apr/2018:11:25:38 +0200] "GET /login HTTP/1.1" 302 0 "-""Mozilla/5.0 (X11; Linux x86_64; rv:59.0) Gecko/20100101 Firefox/59.0""-"

It is redirecting to /login, which it should in fact:

@Configuration@EnableWebSecuritypublic class WebSecurityConfig extends WebSecurityConfigurerAdapter{    @Autowired private AuthService authService;    @Override    protected void configure(HttpSecurity http) throws Exception    {        http            .authorizeRequests()            .anyRequest().authenticated()        .and()            .formLogin()            .loginPage("/login")            .permitAll()        .and()            .logout()            .permitAll();        http.csrf().disable();    }    @Autowired    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception    {        auth.userDetailsService(authService);    }}

Can someone tell me why calls to /login seem to be redirected to /login instead of returing the page on that url?

Thanks for any help!