A kind of a workaround for the user: resize any column/the entire window or collapse the row details.
The issue seems to be a bug with UI Row Virtualization since once I set it to False, it did not occur any more. You can also refer to the documentation on UI Virtualization: http://docs.telerik.com/devtools/wpf/controls/radgridview/features/ui-virtualization.html
* Workaround: commit the edit before removing the item * Works fine with the old Nested mode
When TabStopMode is set to "Skip" on all columns and you press Tab, RadGridView scrolls a little. Workaround: define a custom KeyboardCommandProvider and clear the pending commands.
The same works fine with the old Nested mode.