Autowiring of generic beans with array types is broken since 6.2.0-M1

[genuss]

Affects: 6.2.0-SNAPSHOT. It starts on 6.2.0-M1

Let's start with a MRE:

package com.example.demo;

import org.springframework.context.annotation.AnnotationConfigApplicationContext;

class Demo {
  public static void main(String[] args) {
    var context = new AnnotationConfigApplicationContext();
    context.registerBean("genericBean", GenericClass.class, GenericClass::new);
    context.registerBean("objectGenericConsumer", ObjectConsumer.class);

    context.registerBean("arrayGenericConsumer", ArrayConsumer.class); // This is the problematic line

    context.refresh();
  }
}

class GenericClass<T> {}
record ObjectConsumer(GenericClass<Object> genericClass) {}
record ArrayConsumer(GenericClass<byte[]> genericClass) {}

Here a bean is registered as GenericClass<?>. Later it is autowired as a dependency of other beans. It works when a dependency is defined as GenericClass<Object> but doesn't work for arrays. I'm using byte[] as an example, but any array won't work including Object arrays. I suppose it's a bug as this example works on earlier versions.

An example when it might be important

Spring boot registers KafkaTemplate<?,?> bean as it can be seen in KafkaAutoConfiguration. When used it's declared with concrete generic parameters defined by used key and value serializers. Value serializer org.apache.kafka.common.serialization.ByteArraySerializer works with byte arrays, so requires the second generic parameter to be byte[].