## Bug description

*Please describe.*  
- some datapoints show 0 but people will appear in modal

*If this affects the front-end, screenshots would be of great help.*  

## Expected behavior
- amount of people and datapoint should be the same


## How to reproduce

1. demo data clickhouse instance
2. go to retention trends for a day with some people


## Environment

- [ ] PostHog Cloud
- [ ] self-hosted PostHog, version/commit: _please provide_

## Additional context



#### *Thank you* for your bug report – we love squashing them!

posthog/queries/test/test_retention.py
import json
from datetime import datetime
import pytz
from posthog.api.test.base import APIBaseTest
from posthog.constants import (
    RETENTION_FIRST_TIME,
    RETENTION_TYPE,
    TREND_FILTER_TYPE_ACTIONS,
    TREND_FILTER_TYPE_EVENTS,
    TRENDS_LINEAR,
)
from posthog.models import Action, ActionStep, Event, Filter, Person
from posthog.models.filters import RetentionFilter
from posthog.queries.abstract_test.test_interval import AbstractIntervalTest
from posthog.queries.retention import Retention
from posthog.test.base import BaseTest
def retention_test_factory(retention, event_factory, person_factory, action_factory):
    class TestRetention(AbstractIntervalTest, APIBaseTest):