GridViewColumn's IsVisible Binding breaks when you create an instance of a usercontrol.

HeaderCheckBoxStyle of GridViewSelectColumn returns TextBlock as Header in Office2013 theme

When using XAML binaries and applying the Windows 11 theme, the group expander feature in GridView is not working.

When DragElementAction="ExtendedSelect" in GridView is set, there is a problem with the deselecting
behaviour. Ctrl + click no longer deselects the row.

The problem should be resolved with lib version 2015.3.1019.

Loading items in RadGridView takes too much time due to operations executed on the UI. 

1. Scroll to near the bottom of grid.
2. Refresh the Grid, populating it with less items.
3. Should see mostly blank grid besides for bottom row.
4. If you scroll any the rows show back up.

Available in LIB version 2017.1.213 , it will be also available in the R1 2017 SP1 Release.

The expanded state of the hierarchical item is not preserved when searching thought search panel for something that is not found and clearing search text.

When the bound to the RadGridView objects implement the IDataErrorInfo interface and an invalid cell is scrolled out of the viewport, the corresponding row becomes valid.

Excessive CPU usage when GroupRenderMode is set to Flat, RowDetailsTemplate is used and RowDetailsVisibilityMode is set to Visible. This issue is not reproduced only with Material,  Office2016,  Office2016Touch and Windows8Touch themes.

There is a bug overriding the method ProvideCommandsForKey(Key key) in DefaultKeyboardCommandProvider.
When pressing F10, the received key is Key.System.

To reproduce the problem, there need to be defined a huge amount of columns(400-500). The workaround is to call the Clear method of the Columns collection of RadGridView

The class Telerik.Windows.Data.QueryableExtensions has a static dictionary "providerIsEntityFrameworkCore"

That dictionary will hold a reference (forever) to a collection that is set as Source for the GridView.

Reason is that non IQueryable-types will be wrapped in a EnumerableQuery<T> that will return itself as the provider (https://referencesource.microsoft.com/#System.Core/System/Linq/SequenceQuery.cs,44), encapsulating the reference.

This must be something introduced recently.

Clicking outside the dialog should hide it.