Spring SerializingHttpMessageConverter - GZIPResponseStream error - spring

Question

In org.springframework.http.converter.AbstractHttpMessageConverter.write() is a call to
writeInternal(t, outputMessage);
outputMessage.getBody().flush();
in the Implementation in SerializingHttpMessageConverter.writeInternal() is a call to
objectStream.flush();
objectStream.close();
I guess this is the Reaseon for my Error in GZIPResponseStream.flush():
public void flush() throws IOException {
if(this.closedFlag) {
throw new IOException("Cannot flush a closed output stream");
Producing the Message
INFO | jvm 1 | 2016/04/09 14:05:06.673 | SEVERE: Servlet.service() for servlet dispatcherServlet threw exception
INFO | jvm 1 | 2016/04/09 14:05:06.673 | java.io.IOException: Cannot flush a closed output stream
INFO | jvm 1 | 2016/04/09 14:05:06.673 | at de.hybris.platform.util.GZIPResponseStream.flush(GZIPResponseStream.java:70)
INFO | jvm 1 | 2016/04/09 14:05:06.673 | at org.springframework.http.converter.AbstractHttpMessageConverter.write(AbstractHttpMessageConverter.java:182)
INFO | jvm 1 | 2016/04/09 14:05:06.673 | at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter$ServletHandlerMethodInvoker.writeWithMessageConverters(AnnotationMethodHandlerAdapter.java:975)
is there an Error in the Framework, or do I miss someting. Is there another reaseon for this error? (AND PROB. A FIX?)