Calendar month view is not showing data when current month is not selected.

[Jason]

I use the following code to show the calendar:

<div class="section">
    <script id="event-template" type="text/x-kendo-template">
        <div class="item-template" title="#: title #">
            <div class="title">#: title #</div>
        </div>
    </script>
    <div class="daily-container">
        @(Html.Kendo().Scheduler<WaterFlowReadingModel>()
    .Name("Daily")
	.Events(e =>
	{
		e.Navigate("scheduler_navigate");
		e.DataBound("scheduler_databound");

	})
    .Date((DateTime)ViewBag.Month)
    .StartTime((DateTime)ViewBag.Month)
	.EventTemplateId("event-template")
    .Views(v =>
    {
        v.MonthView();
    })
	.DataSource(d =>
		d.Model(m =>
		{
            m.Id(f => f.Id);
            m.RecurrenceId(f => f.RecurrenceRule);
			m.Field(f => f.Title).DefaultValue("No title");
		}).ServerOperation(true)
		.Read(read => read.Action("GetMetricDaily", "Metric",
			new { type = 1, start = ViewBag.Month.AddMonths(-1), end = ViewBag.Month.AddMonths(1) }))
    ))
    </div>
</div>

Javascript:

    function scheduler_navigate(e) {
        var start = kendo.format('{0:d}', this.view().startDate());
        var end = kendo.format('{0:d}', this.view().endDate());

        $.ajax({
            url: "@(Url.Action("GetMetricDaily", "Metric"))",
            data: {
                start: start,
                end: end,
            }, success: function () {

                var scheduler = $("#Daily").data("kendoScheduler");

                scheduler.refresh();
            }
        });
    }

    function scheduler_databound(e) {
        var today = e.date;
        var scheduler = $("#Daily").data("kendoScheduler");
        var newDate = scheduler.date();
        console.log(newDate, today);
		$.ajax({
			url: "@(Url.Action("GetStatistics", "Metric"))",
			dataType: "json",
			data: {
				month: kendo.format('{0:d}', newDate),
            }, success: function (data) {
				//console.log(data);
				date = new Date(data.ReportingPeriod.match(/\d+/)[0] * 1);
                $("#TotalMonthlyDischargeVolume").val(data.TotalMonthlyDischargeVolume);
                $("#NumberOfDaysOfDischargeToSewer").val(data.NumberOfDaysOfDischargeToSewer);
				$("#MaximumDailyFlow").val(data.MaximumDailyFlow);
                $("#ReportingPeriod").val(kendo.toString(date, "Y"));
            }
        });
    };

The problem is that when I select a different month, no data at all is shown unless I select the current month again, which then shows current data.

Controller code:

        public ActionResult GetMetricDaily([DataSourceRequest] DataSourceRequest request, DateTime start, DateTime end)
        {
            using (var db = new DatabaseContext())
            {
                // Water flows
                var lastMonth = db.WaterFlows
                    .Where(w => w.TimeStamp > start && w.TimeStamp < end && w.TotalizerReading >= 1)
                    .Select(x => new WaterFlowReadingModel()
                    {
                        Title = x.TotalizerReading.ToString(),
                        Start = x.TimeStamp,
                        End = x.TimeStamp,
                        Id = x.Id,
                    }).ToList();
                
                // pH Readings
                var result = db.pHReadings.Where(w => w.TimeStamp > start && w.TimeStamp < end)
                    .GroupBy(o => EntityFunctions.TruncateTime(o.TimeStamp))
                    .Select(g => new
                    {
                        Date = g.Key,
                        Min = g.Min(o => o.pHValue),
                        Max = g.Max(o => o.pHValue),
                        Avg = g.Average(o => o.pHValue)
                    })
                    .ToList();
                
                var output = new List<WaterFlowReadingModel>();
                foreach (var item in result)
                {
                    var title = $"PH - Min: {item.Min:F} / Max: {item.Max:F} / Avg: {item.Avg:F}";
                    output.Add( new WaterFlowReadingModel()
                    {
                        Title = title,
                        Start = item.Date ?? DateTime.Today,
                        End = item.Date ?? DateTime.Today,
                        Id = 0
                    });
                }

                lastMonth.AddRange(output);
                return Json(lastMonth.ToDataSourceResult(request), JsonRequestBehavior.AllowGet);
            }
        }