MapToObjectTransformerParser parent-child ClassLoader issue

When Spring Integration jars are located in main /lib ClassLoader and our war has its one, and we have configuration:

<map-to-object-transformer type="com.my.proj.model.SomeModel"/>

we end-up with ClassNotFoundException.
To change it to:

builder.getBeanDefinition().getConstructorArgumentValues().addGenericArgumentValue(type, "java.lang.Class");

instead of ClassUtils#resolveClassName fixing the problem and in the end we rely on the magic of ConversionService from context on MapToObjectTransformer bean instantiation.
As a workaround configure prototype bean of our model:

<map-to-object-transformer ref="myModel"/>
<bean id="myModel" class="com.my.proj.model.SomeModel" scope="prototype"/>

Unfortunately I don't know how to reproduce it as test-case, but it really works on JBOSS.