It looks like if the bean that I select from the completion is of type java.lang.Object, there is no constructor parameter being generated for it and the inserted field gets the name object instead of the name of the bean.

This is the result after applying the completion:

public class TestBean2 {
    private final Object object;
    public void foo() {
        myBean<*>
    }
}

after applying the bean completion for myBean, where myBean is of type java.lang.Object.