Unable to disable cache for custom serializer since 2.1.11

On djangoldp-poll, a custom view is defined to get total vote on a survey, defined by poll option.

class TotalVotes(LDPViewSet):
    '''view to GET the total counts of votes selecting a particular option'''
    serializer_class = PollOptionSerializer

    def _get_poll_or_404(self):
        pk = self.kwargs['pk']

        try:
            return Poll.objects.get(pk=pk)
        except Poll.DoesNotExist:
            raise Http404('could not get a Poll with this ID!')

    def get_serializer_context(self):
        poll = self._get_poll_or_404()

        votes = poll.votes.all()
        context = super().get_serializer_context()
        context.update({'votes_queryset': votes})
        return context

    def get_queryset(self, *args, **kwargs):
        poll = self._get_poll_or_404()
        return poll.pollOptions.all()

    def get_serializer_class(self):
        # NOTE: this is required because currently DjangoLDP overrides the serializer_class during __init__
        # https://git.startinblox.com/djangoldp-packages/djangoldp/issues/241
        return PollOptionSerializer

and

class PollOptionSerializer(LDPSerializer):
    total_votes = serializers.SerializerMethodField()
    with_cache = False

    class Meta:
        model = PollOption
        fields = ['urlid','name', 'total_votes']

    def get_total_votes(self, obj):
        votes_queryset = self.context.get("votes_queryset")
        return votes_queryset.filter(chosenOption=obj).count()

Since new cache update, this endpoint is not updated after each vote, leading to an invalid total.

I found a workaround disabling cache globaly, or adding the following line on top of get_queryset method

# force cache invalidation
GLOBAL_SERIALIZER_CACHE.invalidate('djangoldp_polls.PollOption')

As there is a working workaround this is not a problem for me anymore, the maybe this could append in other context ?

ping @calummackervoy as asked