try-catch conflict with default-error-handler

[ext2]

Follow route use a default-error-handler for the route, and also defined  a
custom exception handle logic using try-catch-pattern. 

But if the "myProcessRaiseError" raised exception the catch-clause cannot be
invoked; Why? Is it camel's bug?


<route>
      <from uri="ws:... "/>
         <bean ...>
        <doTry>
         <filter>
                <simple>${body} == 'firstChoice'</simple>
                      <bean ref="myProcess" />
                      <bean ref="myProcessRaiseError"/>
              </filter>
                <doCatch>
                        ..some error handler...
                </doCatch>
        </doTry>
     <process ...>
</route>