spring boot 3: Async Controller doesn't work when inherent async methods from interface - spring-boot

Question

Using OpenApi to generate interfaces with "async : 'true'" to have asynchronous controller method handling, I tried to implement those interfaces but I get always 404. I checked also the '/actuator/mappings' method to see whether my endpoints but they don't appear in that list of mappings.
I tried also to have async method without inheriting from an interface and the mapping was correctly considered.Below are some examples:
Async from interface
public interface TestApi {
#GetMapping(value = "/greeting-asnyc-api/{name}", produces = {"application/json", "application/xml"})
CompletableFuture<ResponseEntity<String>> greetingAsync(#PathVariable("name") final String name);
}
// This example doesn't work and returns 404
#RestController
public class TestApiController implements TestApi {
#Async
#Override
public CompletableFuture<ResponseEntity<String>> greetingAsync(final String name) {
return CompletableFuture.completedFuture(ResponseEntity.ok("Greeting " + name));
}
}
// This example works fine
#RestController
public class TestController {
#Async
#GetMapping(value = "/greeting/{name}", produces = {"application/json"})
public CompletableFuture<ResponseEntity<String>> greeting(#PathVariable("name") final String name) {
return CompletableFuture.completedFuture(ResponseEntity.ok("Greeting " + name));
}
}
The first example, i.e., TestApiController, doesn't work unfortunately and returns always 404 (also not found on '/actuator/mappings'), unlike the second example which works fine without any issues (can also be found on '/actuator/mappings')
Sync from interface
public interface TestApi {
#GetMapping(value = "/greeting-sync/{name}", produces = {"application/json", "application/xml"})
ResponseEntity<String> greeting(#PathVariable("name") final String name);
}
#RestController
public class TestApiController implements TestApi {
#Override
public ResponseEntity<String> greeting(final String name) {
return ResponseEntity.ok("Greeting " + name);
}
}
The example above also works fine when inheriting synchronous method from interface.
Did anyone face similar issue? Thanks for helping