ActiveMQ message not dequeued for a single route with multiple queues

I'm not sure if the following is a bug that needs to be reported, and that
I'm missing something obvious.

For a single route with multiple JMS queues, the first queue is properly
dequeued, but the remaining routes do not have the ActiveMQ message
dequeued.
a. Messages flow through the system to completion.
b. If the single route is decomposed into multiple camel routes, the
messages are properly dequeued.
c. The issue occurs for both SjmsComponent and JmsComponent
d. The issue occurs for both auto acknowledge and client acknowledge.

In the following route, the file written at the end is correct, but messages
are still in queues DEMO.TRANSFORM.1 and DEMO.TRANSFORM.2

from("activemq:queue:DEMO.IN")
.process( new org.apache.camel.Processor() {
@Override
public void process(Exchange exchange) throws Exception {
exchange.getOut().setBody(exchange.getIn().getBody().toString() +
"<in>step 1</in>");

})
.to("activemq:queue:DEMO.TRANSFORM.1")
.process( new org.apache.camel.Processor() {
@Override
public void process(Exchange exchange) throws Exception {
exchange.getOut().setBody(exchange.getIn().getBody().toString() +
"<transform1>true</transform1>");

})
.to("activemq:queue:DEMO.TRANSFORM.2")
.process( new org.apache.camel.Processor() {
@Override
public void process(Exchange exchange) throws Exception {
exchange.getOut().setBody(exchange.getIn().getBody().toString() +
"<transform2>true</transform2>");

})
.to("file://c:/temp/DEMO.FINISHED");