The object definitions are split into several lines:

From the PDF specification:

Prev: (Present only if the file has more than one cross-reference section; must not be an indirect reference) The byte offset from the beginning of the file to the beginning of the previous cross-reference section. 

When importing such a document an exception is thrown: System.ArgumentNullException: 'Value cannot be null.

If you reference both Telerik.Windows.Controls.GridView and Telerik.Windows.Controls.Data assemblies and you try to access the ControlPanelItemCollection class in XAML using the "telerik" schema, an error appears. This happens because classes with this name are available in both assembly and both classes are mapped to the "telerik" schema.

To work this around, use a concrete namespace instead of the "telerik" schema. For example:

 xmlns:gridView="clr-namespace:Telerik.Windows.Controls.GridView;assembly=Telerik.Windows.Controls.GridView"

Combo chart with datetime axis and line/bar/area as a first series and scatter series as a second one throws InvalidCastException.

This can happen both with opening an xlsx file with such a chart or creating it in code. Such a chart cannot be created with the Insert Chart dialog (combo type is not yet supported via UI).

Try the following scenario:

• In MS Word, create a table with text in every cell
• In the RadRichTextBox, create a new document
• Activate Review/Track Changes
• Add some empty paragraphs or some text: change tracking markup will be displayed
• Just after the inserted text, copy and paste the table from MS Word: none of the cells has change tracking markup
• If you type inside the table, the new text has markup, but the text that was pasted with the table has no markup.
• If you use the right arrow on the keyboard to exit the change tracking tag, then if you paste the table, it seems to work correctly.

If you set a RowHeight value that is smaller than the height of a pinned row, the last row is clipped when you scroll to bottom. Based on the RowHeight and the number of pinned rows, you can have the last row partially clipped or fully clipped. Also, you can have more than one rows that are cut.

To work this around set the Padding and MinHeight properties of the GridViewPinButton.

<telerik:RadGridView.Resources>
       <!-- In case you are using NoXaml dlls, set the following property to the Style object: -->
       <!-- BasedOn="{StaticResource GridViewPinButtonStyle}" -->
	<Style TargetType="telerik:GridViewPinButton">
		<Setter Property="MinHeight" Value="0" />
		<Setter Property="Padding" Value="2" />
	</Style>
</telerik:RadGridView.Resources>

When using a RadWindow with ResizeMode="CanMinimise" and RadWindowInteropHelper.ShowInTaskbar="True" the close button is moved to the left, which is an unexpected behaviour. Note this doesn't occur when the RadWindowInteropHelper is not used

creating a new project with a single RadWindow will cause the window control buttons (close, maximise, minimise) to shift to the right when restored from minimised, resulting in the close button being pushed off the visible space at any size:

when RadWindowInteropHelper.ShowInTaskbar="True" is used the problem does not occur.

a replication project is attached but the Telerik assembly references will probably need to be reset (I tested back until 2021.1.1x release).