Kotlin with Dagger issue

Kotlin does not generate XxxModule_ProvideXxxFactory classes when using same type of @Provides annotated functions.

@Module public class ApplicationModule {
    @Provides @ApplicationScope String provideString() { return "Application"; }
}

@Module public class ActivityModule {
    @Provides @ActivityScope String provideString() { return "Activity"; }
}

In pure java case, ActivityModule_ProvideStringFactory and ApplicationModule_ProvideStringFactory are created. (:java:build task success.)

But pure kotlin case, ActivityModule_ProvideStringFactory and ApplicationModule_ProvideStringFactory are not created. (:kotlin:build task fails.)

Using versions:

    ext.kotlin_version = '1.0.0-beta-4589'
    ext.dagger_version = '2.1-SNAPSHOT'