Changing content-type for Json serialization not working after upgrade

Describe the bug

I have a REST end-point (POST) which accepts a Json body (JsonObject from vertx-core)

@POST
public Uni<Response> postOperations(final JsonObject body) {

I’m using Json-API and thus want to accept a custom header which is done by using the @Consumes header on my class:

@Consumes("application/vnd.api+json")
public class OperationResource {

This worked fine until migrating from Quarkus 2.8.0.Final to 2.12.3.Final and I guess can be caused by moving to RestEasy Reactive.

Now if I send a request with Content-Type: application/vnd.api+json it throws a NotSupportedException and won’t hit my end-point at all.

The only way I can make it work is by changing the method to accept String instead of JsonObject:

@POST
public Uni<Response> postOperations(final String body) {

But then I have to parse the Json manually myself and handle errors.

[gsmet]

Please prepare a simple Maven reproducer.

[geoand]

You need to use quarkus-resteasy-reactive-jackson in your dependencies