springboot Reactive Repositories are not supported after upgrade to spring boot 2.3.0.M4

Spring data jpa, this code work fine in spring boot 2.2.

    @Async
    fun findByIdIn(ids: List<Long>): CompletableFuture<List<Role>>

After upgrade to 2.3.0.M4 I got exception

by: org.springframework.dao.InvalidDataAccessApiUsageException: Reactive Repositories are not supported by JPA. Offending repository is org.appsugar.archetypes.repository.RoleRepository!
        at org.springframework.data.repository.config.RepositoryConfigurationExtensionSupport.useRepositoryConfiguration(RepositoryConfigurationExtensionSupport.java:367)
        at org.springframework.data.repository.config.RepositoryConfigurationExtensionSupport.getRepositoryConfigurations(RepositoryConfigurationExtensionSupport.java:107)
        at org.springframework.data.repository.config.RepositoryConfigurationDelegate.registerRepositoriesIn(RepositoryConfigurationDelegate.java:148)
        at org.springframework.data.repository.config.RepositoryBeanDefinitionRegistrarSupport.registerBeanDefinitions(RepositoryBeanDefinitionRegistrarSupport.java:107)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:385)
        at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:384)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:148)
        at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:331)
        at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:236)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:275)
        at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:95)
        at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:706)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:532)
        at org.springframework.boot.web.reactive.context.ReactiveWebServerApplicationContext.refresh(ReactiveWebServerApplicationContext.java:67)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315)
        at org.springframework.boot.test.context.SpringBootContextLoader.loadContext(SpringBootContextLoader.java:122)

Comment From: wilkinsona

Thanks for the report. The error message is accurate in that reactive repositories are not supported by Spring Data JPA. Perhaps you're saying that your RoleRepository isn't a reactive repository and it's now being incorrectly identified as one? If that's the case you may have found a bug in Spring Data JPA. They use JIRA for issue tracking so please raise an issue there if that's the case.