gridviewdatacolumn distinct filter does not respect culture when displaying dates.

All the other display do display the correct format

Using Telerik GridView. If a cell is wrapped multi-lines (the more lines the easier to reproduce), and the grid has both vertical and horizontal scrollbars. 
1) Fill one of the cells with a bunch of text in which will cause multi-line text wrapping of within that column.
2) Set focus to a different grid row
3) scroll the vertical scrollbar all the way to the bottom
4) scroll the horizontal scrollbar far enough away to lose visual of the Column
5) scroll the horizontal bar back to the right
Result: the vertical scrollbar will jump.
Expected: The scrollbars should not jump like this as it does not happen when the cell does not contain word-wrapped text.

Workaround is to specify that the format string should contain only the required member path:

<telerik:GridViewDynamicHyperlinkColumn Header="ID" DataMemberBinding="{Binding ID}" NavigateUrlMemberPaths="WebUrl" NavigateUrlFormatString="{} {0}"  TargetName="_blank"/>

There is a mistake in the text shown in the GroupPanel of RadGridview in french.
it should be something like "Glissez un en-tête de colonne et déposez-le ici.."

Implicit row's style should be not cleared when the SelectStyle method of RowStyleSelector returns null.

It does not matter if the button is in a CellTemplate, CellEditTemplate, ControlPanelItem etc.

To work around the issue, set the EnableColumnGroupsVirtualization property of RadGridView to True.

Tapping on GridViewGroupRow or GroupHeaderRow does not expand the group

StackOverFlowException when the GroupMemberPath is set to a different path to the data member and the column is grouped, and filtered.

As an example I add a column to the grid:
columns.Add(new GridViewDataColumn() { DataMemberBinding = new Binding("CustomerId"), GroupMemberPath = "CustomerName", SortMemberPath="CustomerName", Width = 300 });

When the grid appears, drag the CustomerId column to the grouping area
Click the filter icon on the CustomerId column
Click a checkbox in the filtering control to select an item
Exception occurs

There are two different styles for the Validation Message - the Microsoft's and the Telerik's.

Scrollbar scrolls unexpectedly when column width is changed. Check the following video for a reference:
http://screencast.com/t/Y6IwtREc