Service becomes null when using private @SchemaMapping

[sydneyhenrard]

I faced a strange behavior. It might not be a bug, or it's something specific to my application but I figured it could help.

The query has 2 @SchemaMapping one is public and the other is private. No reason just inconsistency on my side. When running the query locally it works fine, but when deployed in dev, the facets part throws a NPE because productService is null. When switching the method from private to public it works.

JDK 21
SB 3.3.4

@Controller
public class ProductGraphQlController {

    private final ProductService productService;

    public ProductGraphQlController(ProductService productService) {
        this.productService = productService;
    }

    @QueryMapping
    public ProductSearch allProductsWithFacets(
        @Argument String tenant,
        ScrollSubrange subrange,
        GraphQLContext graphQLContext
    ) {...}   

    @SchemaMapping(field = "content")
    public Window<Product> content(
        ProductSearch productSearch,
        @ContextValue String tenant,
        @ContextValue ScrollSubrange subrange
    ) {...}   

    @SchemaMapping(field = "facets")
    private List<Facet> facets(
        ProductSearch productSearch,
        @ContextValue String tenant
    ) {...}   
}

[bclozel]

I think there is more to this as the behavior you're describing doesn't make sense to me. Can you share a minimal sample application that we can take a look at?