Hi,

Please find attached a sample project demonstrating an issue with the XamDataGrid, when housed inside a tab control (or XamDockManager, I just used a tab control for simplicity in the example).

There is a single window, with a tab control inside, with two tabs.  I've put a XamDataGrid inside each tab.

I've set a specific combination of settings, to turn off edit and record selectors and set the SelectionTypeRecord to 'single'.  On the grid in the first tab only, I've set the CellClickAction to 'SelectRecord'.

Run the app, select the top record on the grid in the first tab.  Now switch to the second tab... then back to the first again.  The top record still appears to be selected, but try clicking on a different row... it now appears there are two rows selected even though SelectionTypeRecord is set to 'single'!

Snooping the app shows that only the second 'selected' record has IsSelected and IsActive set to true.... the top record has both these values set to false but is still showing in a 'selected' style.

The grid in the second tab, whose CellClickAction has been left on 'SelectCell', works as expected.

Dave