Unable to dynamically set axisXTop for Series in ChartView

When attempting to dynamically set the axisXTop property for a Series in a ChartView, the axis is displayed at the bottom of the chart, instead of at the top as expected.

However, when using a similar implementation for axisYRight, the axis behaves as expected and is displayed on the right side of the chart.

Steps to Reproduce:

1. Build and run the attached chart_axis_test.zip project.
2. Swipe within the SwipeView.