httpBasic() .disable() is not working spring boot 2.6.12

Question

I'm trying to create a resource server oauth2 token validation, it's working as expected but I also got HTTP basic enabled by default which is not the expected behavior as I have configured it to be disabled: here is my code:

    @Configuration 
    @EnableWebSecurity
    public class SecConfig{

    @Value("${spring.security.oauth2.resourceserver.opaque.introspection-uri}")
    String introspectionUri;

    @Value("${spring.security.oauth2.resourceserver.opaque.introspection-client-id}")
    String clientId;

    @Value("${spring.security.oauth2.resourceserver.opaque.introspection-client-secret}")
    String clientSecret;

    private static final String[] WHITE_LIST_URLS = {
            "/v3/api-docs/**",
            "/swagger-ui/**",
            "/doc"
    };

    @Bean
    public SecurityFilterChain securityFilterChain(HttpSecurity http) throws Exception {
        // @formatter:off
        http
                .httpBasic()
                .disable()
                .authorizeHttpRequests((authorize) -> authorize
                        .antMatchers(WHITE_LIST_URLS).permitAll()
                        .anyRequest().authenticated()
                )
                .oauth2ResourceServer((oauth2) -> oauth2
                        .opaqueToken((opaque) -> opaque
                                .introspectionUri(this.introspectionUri)
                                .introspectionClientCredentials(this.clientId, this.clientSecret)
                        )
                )
        ;
        return http.build();
    }

}

I have tried also disabling autoconfiguration using this below but didn't work, spring boot still autoconfigure it even if I exclueded it!!!

@SpringBootApplication(exclude = { SecurityAutoConfiguration.class})

Important to mention my app is a so simple using only spring data and spring security and openapi for swagger!