Spring Cloud Gateway with Resilience4J Circuit Breaker did not go to open state

Question

While attempting to integrate Resilience4J with Spring Cloud Gateway, some features such as retry appear to be working properly, but the Circuit Breaker did not open the state although failure was counted as shown at below screenshot.

 @Bean
public Customizer<ReactiveResilience4JCircuitBreakerFactory> defaultCustomizer() {
    return factory->factory.configureDefault(id->new Resilience4JConfigBuilder(id)
            .circuitBreakerConfig(CircuitBreakerConfig.custom()
                    .slidingWindowSize(5)
                    .failureRateThreshold(2)
                    .permittedNumberOfCallsInHalfOpenState(5)
                    .slowCallDurationThreshold(Duration.ofMillis(200))
                    .slowCallRateThreshold(50.0F)
                    .waitDurationInOpenState(Duration.ofSeconds(30))
                    .slidingWindowType(CircuitBreakerConfig.SlidingWindowType.COUNT_BASED)
                    .build())
            .timeLimiterConfig(TimeLimiterConfig.custom()
                    .timeoutDuration(Duration.ofSeconds(3000))
                    .cancelRunningFuture(true)
                    .build())

            .build());
}

and this is route configuration

 private Buildable<Route> setPredicateSpec(ApiRoute apiRoute, PredicateSpec predicateSpec) {
    BooleanSpec booleanSpec=predicateSpec.path(apiRoute.getPath());
    booleanSpec.filters(f->
    {
        f.circuitBreaker(c->{
            c.setName("DDDDDDTTTTT");
            c.addStatusCode("500");

        });

        f.fallbackHeaders(config ->{
            config.setExecutionExceptionMessageHeaderName("message-header");
            config.setExecutionExceptionTypeHeaderName("type-header");
            config.setRootCauseExceptionMessageHeaderName("root-cause-message-header");
            config.setRootCauseExceptionTypeHeaderName("root-cause-type-header");
        });
        f.filter(authenticationFilter);
        f.retry(config->{
            config.setMethods(HttpMethod.GET);
            config.setRetries(2);
            config.setBackoff(Duration.ofMillis(50),Duration.ofMillis(500),0,false);
            config.setStatuses(HttpStatus.INTERNAL_SERVER_ERROR);
        });

        f.requestRateLimiter(r->{
            r.setKeyResolver(apiKeyResolver);
            r.setRateLimiter(rateLimiter);
        });

        return f;
    });

    if (!StringUtils.isEmpty(apiRoute.getMethod())) {
        booleanSpec.and()
                .method(apiRoute.getMethod());
    }
    return booleanSpec.uri(apiRoute.getUri());
}

and

As a result, failures have been counted, but the failure rate is -1

Here are my properties as well.

  spring.cloud.gateway.filter.request-rate-limiter.deny-empty-key=false
  management.endpoint.gateway.enabled=true
  management.endpoint.health.show-details=always
  management.health.circuitbreakers.enabled=true
  management.endpoints.web.exposure.include=health
  management.endpoint.metrics.enabled=true
  management.endpoints.web.exposure.include=*
  management.endpoint.prometheus.enabled= true
  management.metrics.export.prometheus.enabled= true
  spring.cloud.circuitbreaker.resilience4j.enabled = true

as well as my dependencies

  implementation 'org.springframework.boot:spring-boot-starter-data-r2dbc'
  implementation 'org.springframework.boot:spring-boot-starter-data-redis-reactive'
  implementation 'org.springframework.cloud:spring-cloud-starter-gateway'
  implementation 'org.springframework.cloud:spring-cloud-starter-circuitbreaker-reactor-resilience4j'
  implementation 'org.springframework.boot:spring-boot-starter-actuator'
  implementation 'org.springframework.boot:spring-boot-starter-aop'
  implementation 'org.springframework.boot:spring-boot-starter-webflux'
  implementation 'org.springdoc:springdoc-openapi-webflux-ui:1.6.11'
  implementation 'io.jsonwebtoken:jjwt:0.9.1'
  implementation 'javax.xml.bind:jaxb-api:2.3.1'
  implementation 'org.mapstruct:mapstruct:1.5.2.Final'
  annotationProcessor 'org.projectlombok:lombok'
  runtimeOnly "io.opentelemetry.javaagent:opentelemetry-javaagent:1.18.0"
  runtimeOnly 'io.micrometer:micrometer-core'
  runtimeOnly 'io.micrometer:micrometer-registry-prometheus'