jpa:repositories changes @Repository objects into proxies. Autowiring fails

When activating jpa:repositories in the context the @Repository annotated objects get somehow proxied and spring is unable to autowire them.
Please have a look at the demo project attached. There you will find a failing test.
If you change the @Repository annotation of the SelectModule class into @Component the testcase is working. It is also working if you remove jpa:repositores from the text-context.xml.