I have a RadChart in a RadPane, and it works fine until I change the docking state of the pane.
If I pin it or float it, my radchart looses all binding settings somehow and the series are no longer displays in the chart.
Unfortunately we couldn't reproduce the problem that you are describing in our tests. We used RadChart in data bound mode that gets its data from the viewmodel and series mappings defined in xaml. Can you please share the steps needed to reproduce this issue and if possible some code?
In the attached file you can find the project we used for testing in our environment.