Spring @ExceptionHandler not handling Hibernate's javax.validation.ConstraintViolationException

I'm using Hibernate Validator with Spring to validate my entities, and I have the following bean that validates entities and throws a javax.validation.ConstraintViolationException in case something is invalid:

http://ift.tt/1EgqdOj

I'm using this method from a Service, and letting it all pass through the following class that handles the given exceptions, specially this one as you can see in the line provided:

http://ift.tt/1L58bVP

Debugging that code, I can even see the above method being executed, with the right exception passed and everything, but instead of a 400 Bad Request and a nice array with the constraint violations, I'm getting a 500 Internal Server Error with the message: org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.validation.ConstraintViolationException.

And with that my unit tests results in an error.

As for the other exceptions that I created, like this one:

http://ift.tt/1EgqgcQ

They're being handled just fine, and returns a 404 Not Found.

Can someone help me? I'm not using Spring Boot, just basic XML config app.