Please, set the AxisX.LayoutMode to AixsLayoutMode.Normal. When zooming, RadChart filters out the data, which is not within the zoomed area. Setting AxisX.LayoutMode to AxisLayoutMode.Inside (as shown by your image) effectively shifts the first tick to the right. As there is no data before that, an empty space appears. AxisLayout.Normal moves the tick to the very beginning of the axis.
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