Spring repository find calls in java parallelStream error for unit tests

Spring repository find calls inside java parallelStream for unit tests do not return the expected results. I suspect it could be some configuration needed for spring tests when using parallelStream? Any ideas?

//Is never empty
List<ObjectHistory> allHist = objectHistoryRepository.findAll();

//problematic
objects.parallelStream()
        .forEach(i-> {
              //Is  empty except for one or none
              List<ObjectHistory> allHist = objectHistoryRepository.findAll();

              //Optional is empty except for one or none
              Optional<ObjectHistory> objHistoryOptional = objectHistoryRepository.findFirstById(i.getId());
         });

//works fine
objects.stream()
        .forEach(i-> {
              //Is never empty
              List<ObjectHistory> allHist = objectHistoryRepository.findAll();

              //Optional is never empty
              Optional<ObjectHistory> objHistoryOptional = objectHistoryRepository.findFirstById(i.getId());
        });