Have seen this bug elsewhere marked as resolved but it clearly isn't.

To reproduce simply create a Junit 4 Arquiliian test in which EntityManager and UserTransaction fields are annontated for injection.

Devise an @Test method contriving the use of (say) Runnable. Call a method in another class using the Runnable as a parameter

Code using an anonymous inner class idiom; everything works fine.

Code it as a lambda expression and, bizarrely, only the EntityManager is not injected (utx is OK!). No hint of anything awry in the log, no exception thrown, field is simply left null.