Why we are getting extra characters "n | " in request body XML?

Issue

We are migrating from JBoss Fuse 6.1 to 6.3 and we use camel-cxf rsServer endpoint to expose restful service. For instance:

<camelcxf:rsServer id="restService" address="/api" loggingFeatureEnabled="true"
           serviceClass="org.apache.camel.component.cxf.jaxrs.testbean.CustomerService" >
        <camelcxf:providers>
            <ref component-id="jsonProvider"/>
        </camelcxf:providers>
    </camelcxf:rsServer>

    <bean id="jsonProvider" class="com.fasterxml.jackson.jaxrs.json.JacksonJsonProvider"/>

    <camelContext id="Customer.Rest.test" xmlns="http://camel.apache.org/schema/blueprint">
        <route>
            <from uri="cxfrs:bean:restService?bindingStyle=SimpleConsumer&amp;performInvocation=true" />
            <log message="Received: ${body}"/>
        </route>
    </camelContext>

Here is snippet of our service class:

...
@Path("/")
public class CustomerService {
...
    @POST
    @Path("/customer")
    @Consumes("application/xml")
    @Produces("application/xml")
    public Response addCustomer(String customer) {
        LOG.info("received a POST request on /customer with customer info: " + customer);
        // ... demo only, not doing any actual work here, just return the same request XML back ...
        return Response.ok(customer).build();
    }
...

And we use SoapUI client to send in following XML:

<Customer>
    <id>125</id>
    <name>Joe</name>
</Customer>

However, we are getting extra characters "n | " in request body XML:

<Customer>n  |     <id>125</id>n  |     <name>Joe</name>n  | </Customer>

It is causing problem to our message flow further down the camel route.

Here are our questions:
1. Why are we getting these extra characters "n | "?
2. Is it possible to get rid of them?