cancel and error end activity throws exception in subprocess

I created a simple process which includes a state and a subprocess with different end activities
The subprocess is similar to the example in user guide > http://docs.jboss.com/jbpm/v4/userguide/html_single/#endstate.

When I send the signal "end" to the state in the subprocess, the process wait in state "end state". That's correct!
But if I send the signal "cancel" or "end", a JbpmException "execution[...] has running subprocess: execution[...] in state cancel/error" throws.
This exception throws in method checkActive() of the class ExecutionImpl.

 if (!isActive())
protected void checkActive()
    {
        if (!isActive())
        {
            throw new JbpmException(toString() + " is not active: " + state);
        }
        else if (this.subProcessInstance != null
                && !Execution.STATE_ENDED.equals(this.subProcessInstance.getState()))
        {
            throw new JbpmException(toString() + " has running subprocess: "
                    + this.subProcessInstance.toString() + " in state " + this.subProcessInstance.getState());
        }
   }

The problem is that the methode only check if the subprocess has the state "end".
I think the method have to check if the subprocess state is one of

. Right?