There is a fixed value of 16px set for the Height of the GroupHeader. Thus, when a FontSize bigger than 16px is set, the Text is cut off as the GroupHeader is not resized. The workaround is to predefine the GroupHeaderContentTemplateSelector and remove the fixed Height that is set through it. 

<telerik:GroupHeaderTemplateSelector x:Key="GroupHeaderContentTemplateSelector">
                <telerik:GroupHeaderTemplateSelector.HorizontalTemplate>
                    <DataTemplate>
                        <ContentPresenter Content="{Binding FormattedName}"  Margin="4" />
                    </DataTemplate>
                </telerik:GroupHeaderTemplateSelector.HorizontalTemplate>

                <telerik:GroupHeaderTemplateSelector.VerticalTemplate>
                    <DataTemplate> 
                            <ContentPresenter Content="{Binding FormattedName}" Margin="4" VerticalAlignment="Top">
                                <ContentPresenter.LayoutTransform>
                                    <RotateTransform Angle="-90" />
                                </ContentPresenter.LayoutTransform>
                            </ContentPresenter> 
                    </DataTemplate>
                </telerik:GroupHeaderTemplateSelector.VerticalTemplate>
 </telerik:GroupHeaderTemplateSelector>

When the RecurrenceFrequency is set to Year. The GetOccurrences() method of the RecurrencePattern does not respect the Interval property.

The direction of EditAppointmentDialog, RecurrenceChoiceDialogStyle etc. is always LeftToRight even if the ScheduleView itself is RightToLeft.

When an appointment is double clicked, the edit appointment dialog is shown. When the escape button is clicked, the edit appointment dialog is closed. When the above 2 actions are performed in quick succession, the appointment disappears. 

The DragDropState.TargetedApppointment property is not updated correctly when dropping an item from an external source. For example drag-drop an object from RadGridView control.

  Steps to reproduce:
  1.Open the attached solution, build and run the sample application.
    2.There are two appointments created in the view. Double click the 'Appointment2' to edit it.
    3.Select 'Room 1' from the 'Room' combo box and unselect 'Room 2'.
    4.Click OK to apply the changes.
    5.'Appointment2' is moved to 'Room 1' however it also becomes unselected as the 'Appointment1' becomes the selected one.

Available in LIB version: 2017.2.515

In WeekView, when ShowWeekGroupHeaders is set, templating the GroupHeaders with GroupHeaderContentTemplateSelector lead to a rendering issue (see attached files).

In case I forgot something, here is my GroupHeaderContentTemplateSelector definition : 

    <svcore:GroupHeaderContentTemplateSelector x:Key="_GroupHeaderContentTemplateSelectorKey">
      <svcore:GroupHeaderContentTemplateSelector.HorizontalTemplate>
        <DataTemplate>
          <ContentPresenter MinHeight="16" Margin="4" Content="{Binding FormattedName, Converter={StaticResource UpperCaseStringConverter}}"/>
        </DataTemplate>
      </svcore:GroupHeaderContentTemplateSelector.HorizontalTemplate>
      <svcore:GroupHeaderContentTemplateSelector.VerticalTemplate>
        <DataTemplate>
          <ContentPresenter Margin="4" MinHeight="16" VerticalAlignment="Top" Content="{Binding FormattedName, Converter={StaticResource UpperCaseStringConverter}}">
            <ContentPresenter.LayoutTransform>
              <RotateTransform Angle="-90"/>
            </ContentPresenter.LayoutTransform>
          </ContentPresenter>
        </DataTemplate>
      </svcore:GroupHeaderContentTemplateSelector.VerticalTemplate>
      <svcore:GroupHeaderContentTemplateSelector.HorizontalResourceTemplate>
        <DataTemplate>
          <Border Background="{Binding Name.DBResource.Color, Converter={StaticResource _SharedStringColorToSolidColorBrushConverterKey}}" Height="60" Margin="2">
            <StackPanel Orientation="Vertical" Margin="8">
              <TextBlock Foreground="{Binding Name.DBResource.Color, Converter={StaticResource _SharedBackgroundStringColorToForegroundConverterKey}}" FontSize="16" Margin="0" Text="{Binding Name.DisplayName}" />
              <TextBlock Foreground="{Binding Name.DBResource.Color, Converter={StaticResource _SharedBackgroundStringColorToForegroundConverterKey}}" FontSize="12" Text="{Binding Name.DBResource.Code}" />
            </StackPanel>
          </Border>
        </DataTemplate>
      </svcore:GroupHeaderContentTemplateSelector.HorizontalResourceTemplate>
      <svcore:GroupHeaderContentTemplateSelector.VerticalResourceTemplate>
        <DataTemplate>
          <Border Background="{Binding Name.DBResource.Color, Converter={StaticResource _SharedStringColorToSolidColorBrushConverterKey}}" Width="140" Margin="2">
            <StackPanel Margin="8">
              <TextBlock Foreground="{Binding Name.DBResource.Color, Converter={StaticResource _SharedBackgroundStringColorToForegroundConverterKey}}" FontSize="16" Margin="-2 3 0 5"  Text="{Binding Name.DisplayName}" />
              <TextBlock Foreground="{Binding Name.DBResource.Color, Converter={StaticResource _SharedBackgroundStringColorToForegroundConverterKey}}" FontSize="12" Text="{Binding Name.DBResource.Code}" />
            </StackPanel>
          </Border>
        </DataTemplate>
      </svcore:GroupHeaderContentTemplateSelector.VerticalResourceTemplate>
    </svcore:GroupHeaderContentTemplateSelector>

Available in LIB version 2017.1.206 , it will be also available in the R1 2017 SP1 Release.

Available with LIB version 2016.3.1205, it will be also available in the 2017 R1 release.

Drag and drop is not working properly for RadScheduleView WPF running inside WindowsFormsHost, in a WPF Browser Application. When you drag an appointment, it drops it in another location. 

The hierarchy of child controls is as follows:
•	WPF XAML Browser App page, containing a WinFormsHost  (WPF)
  o	WInFormsControl containing a ElementHost control (WinForms)
   	WPFUserControl containing RadScheduleView (WPF)
Please see the attached sample project that demonstrates this issue. I would like to make the whole application WPF, however the parents of the WPFUserControl are an existing application where we want to include the RadScheduleView.