TransactionSynchronization: bound Resource isn't unbound if 'transactionSynchronizationFactory' isn't configured

<jdbc:embedded-database id="dataSource" type="H2"/>

	<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource" />
	</bean>

	<int:inbound-channel-adapter id="inboundAdapter" channel="testChannel" expression="'fghfghfg'">
		<int:poller fixed-rate="1000">
			<int:transactional/>
		</int:poller>
	</int:inbound-channel-adapter>

	<int:logging-channel-adapter id="testChannel" level="FATAL"/>

public static void main(String[] args) {
		new ClassPathXmlApplicationContext("TransactionSyncBug-context.xml", TransactionSyncBug.class);
	}

TransactionSynchronizationManager.bindResource(source, holder);