Java enumeration and Spring Converter no longer generates enum drop-down

[arey]

Describe the bug

After upgrading from springdoc-openapi 1.6.6 to 1.6.7/1.6.13, the enum drop-down list is not visible in Swagger UI.
This issue looks like related to the previous one: #1663
I'm using a Spring MVC Converter to convert upper case to lower case.

@Component
public class FooBarConverter implements Converter<String, FooBar> {
  @Override
  public FooBar convert(String source) {
    return FooBar.fromValue(source);
  }
}

@Generated(value = "org.openapitools.codegen.languages.SpringCodegen")
public enum FooBar {
    FOO("foo"),
    BAR("bar");

    private String value;

    FooBar(String value) {
        this.value = value;
    }

    @JsonValue
    public String getValue() {
        return value;
    }

    @Override
    public String toString() {
        return String.valueOf(value);
    }

    @JsonCreator
    public static FooBar fromValue(String value) {
        for (FooBar b : FooBar.values()) {
            if (b.value.equals(value)) {
                return b;
            }
        }
        throw new IllegalArgumentException("Unexpected value '" + value + "'");
    }
}

To Reproduce

• What version of spring-boot you are using?
  I've tested with Spring Boot 2.7.6 and 2.6.8

• What modules and versions of springdoc-openapi are you using?
  1.6.6 works
  1.6.7 and 1.6.13 does'nt

• Provide with a sample code (HelloController) or Test that reproduces the problem
  I've cloned @solita-alperttiti sample and adapt it; https://github.com/arey/springdoc-enum-example
  The diff could be check at this commit: arey/springdoc-enum-example@078bdec

Expected behavior

I would like to see a drop down list on Swagger UI

Screenshots

See the sample repository: https://github.com/arey/springdoc-enum-example

[arey]

Thanks a lot Badr :-)