Single Column in ColumnRenderableSeriesViewModel Not Expanding to Full Width

I’m implementing a SciChart WPF (v8.6.30610) control that displays a single column within a SciChartSurface, which correctly stretches to fill the available width (≈800px). The chart is bound via MVVM using a ColumnRenderableSeriesViewModel and a UniformXyDataSeries(0, 1d) containing one data point. However, the column remains narrow (~50px) regardless of the chart’s actual width.

To investigate further, I modified the VisibleRange to (-1 ,1) and changed the data setup to UniformXyDataSeries(0, 20d). With this configuration, the column width increased slightly (to around 100px), but it still doesn’t scale proportionally to the SciChartSurface width. Adjusting properties like DataPointWidth or AutoRange has no effect on the column’s width.

My goal is for the single column to span the entire available chart width, effectively filling the space similar to a full-width bar.

Is DataPointWidth the correct property to control column width in this scenario?
Does the UniformXyDataSeries spacing or X-axis VisibleRange inherently restrict the rendered column size?
What is the recommended approach to achieve a full-width single column in SciChart?

Any guidance or clarification on the expected behavior would be greatly appreciated.

Attached is the working project (zip file) and also the image attached gives a clarity on the above ask.