Flow_run_filter with FlowRunFilterStartTime doesn't return all runs

[yaron]

Hi,

We have this flow that runs continuously.

Each run is about 1 minute, and when one finishes, another one starts right away.

We are using the Prefect client to get all the completed runs that finished in the last 10 minutes:

async def monitor_realtime_sync():    

    start_time = datetime.now() - timedelta(minutes=10)

    async with get_client() as client:

        r = await client.read_flow_runs(
            flow_filter=FlowFilter(name={"any_": ["sync_snowflake_realtime"]}),
            limit=5,
            flow_run_filter=FlowRunFilter(
                state=FlowRunFilterState(
                    type=FlowRunFilterStateName(any_=["COMPLETED"])
                ),
                start_time=FlowRunFilterStartTime(
                    after_=start_time
                )
            ))

        for flow in r:
            print(flow.name, flow.flow_id, flow.created)

But we are getting no results. Weirdly enough, if we try to set the time range to the last month (which is 43800 minutes), then we do see the results:

It seems like the API returns flow runs which are about 1 month old. Any idea why we are not getting fresh runs?