restTemplate.exchange have exception "insufficient data written" with springboot 3.3

[automvc]

The example use springboot 3.0 is normal, but use springboot 3.3 have exception.
Maybe it is different from #31902

detail error:
org.springframework.web.client.ResourceAccessException: I/O error on POST request for "https://someurl/api/": insufficient data written
at org.springframework.web.client.RestTemplate.createResourceAccessException(RestTemplate.java:915)
at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:895)
at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:830)
at org.springframework.web.client.RestTemplate.exchange(RestTemplate.java:691)

example code:

try {
URI uri = getUri(request, method);

	HttpHeaders headers = new HttpHeaders();
	Enumeration<String> headerNames = request.getHeaderNames();
	//set head from request 
	HttpEntity httpEntity = new HttpEntity<>(body, headers);
	ClientHttpRequestFactory clientHttpRequestFactory = (new SimpleClientHttpRequestFactory() {
	     //... 
	});

	ClientHttpRequestFactory factory = new BufferingClientHttpRequestFactory(clientHttpRequestFactory); // already use BufferingClientHttpRequestFactory

	RestTemplate restTemplate = new RestTemplate(factory);
	ResponseEntity serverResponse = null;

	serverResponse = restTemplate.exchange(uri, method, httpEntity, String.class); //this line have ResourceAccessException : insufficient data written

	// ... other
} catch (Exception e) {
	logger.error("", e);
}
return ResponseEntity.badRequest().build();

[bclozel]

Duplicates spring-projects/spring-framework#33015