Mismatch Between Bar Values and Y-Axis in QtCharts

When using QtCharts to display bar data, the visual height of the bars (specifically the blue ones) does not align correctly with the values on the right-side Y-axis. This creates a misleading visual representation where the bars do not appear to match their expected values according to the axis scale.

Steps to Reproduce:

1. Open the provided example project.

1. Build and run the application.

1. Observe the bar chart with the Y-axis positioned on the right side.

1. Compare the height of the bars to the corresponding Y-axis values.

Expected Behavior:
Bar heights should correspond accurately to their associated values on the right-side Y-axis.

Actual Behavior:
Bar heights appear inconsistent with the values shown on the right-side Y-axis, indicating a possible rendering or alignment issue.