[BUG] AnnotationValues cannot instantiate Compound Annotation

I have written an Annotation for Lombok to process, which has an array of sub-annotations as one of its parameters. The code runs fine with javac, but it fails to work in Eclipse (v2018-09). The error I get when subs() is invoked on MainAnnotation instance is: I can't make sense of this annotation value. Try using a fully qualified literal. eclipse marks the first occurence of SubAnnotation as the source of the error.

• Lombok version 1.18.4
• eclipse 2018-09, java 9.0.4, eclipse project using jdk 1.8.0_191

Here is the code

@Retention( SOURCE )
@Target( TYPE )
public @interface MainAnnotation {
    String name();
    SubAnnotation[] subs() default {};
}

@Retention( SOURCE )
@Target( TYPE )
public @interface SubAnnotation {
    String name();
    String value();
}

@ProviderFor( EclipseAnnotationHandler.class )
public class HandleLombokMain extends EclipseAnnotationHandler<MainAnnotation> {
    @Override
    public void handle( AnnotationValues<MainAnnotation> annotation, Annotation ast, EclipseNode annotationNode ) {
        MainAnnotation mainAnnotation = annotation.getInstance();
        mainAnnotation.subs(); // <<< error
    }
}
@MainAnnotation(name="main",subs={@SubAnnotation(name="sub1",value="1"),@SubAnnotation(name="sub2",value="2")})
public class TestClass {
}