Spring Cloud Open Feign: linebreaks "\n" stripped from gzip response body - spring

Question

Linebreaks ("\n" or "\r") are been stripped out from gzip response body, when using response compression configuration (as below) in Spring Cloud Open Feign. There are no errors raised. Linebreaks are just been replace by an empty string "". The response has the correct "content-encoding: gzip" header, and a well formed gzipped body content.
Does someone has a clue? It seems a issue for me as I opened here spring-cloud-openfeign/issue400
feign.compression.response.enabled: true
feign.compression.response.useGzipDecoder: true
# Same behaviour using Apache Http as client
feign.httpclient.enabled: true
SpringCloudFeignClient.java
package springcloudfeigngzip;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
#FeignClient(name = "SpringCloudFeignClient", url = "http://localhost:8082")
public interface SpringCloudFeignClient {
#GetMapping(value = "/gzip")
String getGzippedString();
}
ApplicationTest.java:
package springcloudfeigngzip;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.contract.wiremock.AutoConfigureWireMock;
import static com.github.tomakehurst.wiremock.client.WireMock.*;
import static org.junit.jupiter.api.Assertions.assertEquals;
#SpringBootTest
#AutoConfigureWireMock(port = 8082)
class ApplicationTest {
#Autowired
private SpringCloudFeignClient springCloudFeignClient;
#Test
void success_GzipOneLine() {
stubFor(get(urlEqualTo("/gzip")).withHeader("Accept-Encoding", containing("gzip"))
.willReturn(aResponse().withStatus(200).withBody("lineone")));
String response = springCloudFeignClient.getGzippedString();
assertEquals("lineone", response); //success
}
#Test
void fail_GzipLineBreak() {
stubFor(get(urlEqualTo("/gzip")).withHeader("Accept-Encoding", containing("gzip"))
.willReturn(aResponse().withStatus(200).withBody("lineone\nlinetwo")));
String response = springCloudFeignClient.getGzippedString();
assertEquals("lineone\nlinetwo", response); //fail!
}
}
bootstrap.yml:
feign:
compression:
response:
enabled: true
useGzipDecoder: true
Versions:
org.springframework.boot: 2.3.3.RELEASE
org.springframework.cloud: Hoxton.SR8
Full project here:
https://github.com/spring-cloud/spring-cloud-openfeign/files/5147346/spring-cloud-feign-gzip.zip