Datagrid virtualization and grouped columns - scrolling issue

[Stam]

Hello,

if you group several columns in DataGrid with enabled Virtualization, when scrolling, in some point scroller jumps up/down.
Is this a bug?
You can reproduce this on your demo "DataGrid Virtualization", just add AllowGrouping="true", group two columns and you can see strange behaviour when scrolling.

Thank you

[enchev]

At the moment we are not aware of any way to improve this, still if you have some ideas we accept pull requests!