Hi friends,

  my custom tooltips never work on the first bar only of the BarSeries, here is a simple example showing this behavior.  There is important data for me in that column, so let's hope it's possible to resolve this.  Many thanks!

This is the same feature as the TickOrigin in the WPF chart: https://docs.telerik.com/devtools/wpf/controls/radchartview/axes/axis

The property should specify where the ticks originate.