src/java.base/share/classes/sun/util/locale/provider/BreakIteratorProviderImpl.java

*** 184,191 ****
          return langtags;
      }
  
      @Override
      public boolean isSupportedLocale(Locale locale) {
!         return LocaleProviderAdapter.isSupportedLocale(locale, type, langtags);
! }
  }
--- 184,191 ----
          return langtags;
      }
  
      @Override
      public boolean isSupportedLocale(Locale locale) {
!         return LocaleProviderAdapter.forType(type).isSupportedProviderLocale(locale, langtags);
!     }
  }