A NullReference exception is thrown when the content of a MS Outlook mail is copy/pasted into RadRichTextBox. 

This is reproducible in Paged LayoutMode.

When a continuous section break is inserted on a page containing an image and with a watermark applied, the watermark is shown on top of the other document elements. The issue is observed only on the page with the section break.

Uppercase words with non-alphanumeric symbols, e.g. period,  are recognized as spelling errors by the spell checker.

There are two scenarios which we think are related to this.
1. For example, you have  U.N. spell checker is recognized only the U.N and considering the last dot as an end of a sentence. If you add the U.N. to the dictionary the spell checker still recognizes only U.N and the last dot is ignored.
2. The SpellCheckUppercaseWords property of the DocumentSpellChecker is set to false and words with uppercase should be ignored. Nevertheless, this property is set to false the U.N. is not ignored.

Using the ClearAll button in the Tabs dialog, the properties selected for alignment and leader of the tab stop are not reset to their default values.

Workaround: Create a custom TabStopsPropertiesDialog and reset the values in the Click event handler of the Clear All button. The code for the custom dialog is attached.

Only a single tab stop on the same position should be allowed. This should be restricted in the Tabs dialog.

Workaround: Create a custom TabStopsPropertiesDialog and change the behavior of the OK button through the Click event handler.

Replacing a word with the same word but with capital letters leads to an infinite loop in the FindReplaceDialog when the search and replace values are surrounded by spaces. For example, search for " and " and replace with " AND ".

Workaround: Create a custom dialog and modify the logic for replacing text.

Available in LIB Version 2018.1.319.

MS Word shows additional tab stop for a text in a list when a document is exported to RTF format.
Steps to reproduce:
1. Open RadRichTextBox
2. Add 2 or 3 paragraphs with text.
3. Add a 5-inch tab stop for those paragraphs.
4. Apply a list over those paragraphs.
5. Export to RTF format and view in MS Word.
Note: The paragraphs should not contain any tab symbols.
Observed result: MS Word shows additional tab stop at the start of the text in the list.

NullReferenceException is thrown when a hyperlink is removed from the document while the user is hovering it with the mouse. Such cases are when hyperlink is removed from the context menu, or when TOC field containing hyperlinks is updated from the context menu.


The exception is with the following call stack: 

ErrorMessage: Object reference not set to an instance of an object.
StackTrace:    at Telerik.Windows.Documents.UI.UIProviders.HyperlinkUIProviderBase.UIElement_MouseEnter(Object sender, MouseEventArgs e)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)

   ...

If the mouse hovers the hyperlink a moment later, exception is not observed. The situation when the mouse is over a hyperlink is not so uncommon:

- When the user operates hyperlink context menu with the keyboard and removes the hyperlink

- when there are multiple items in the ToC, there is great probability for the mouse to be over a hyperlink which is just below the Update Field button in the context menu - and when the context menu disappears, the mouse gets over the hyperlink.

Fix available in LIB Version 2017.2.529.

The header of the first page can have only settings applied without any content. In such scenarios, RtfFormatProvider doesn't import the whole header, which can lead to a different layout of the document.

The exception is thrown when performing undo of a section break, immediately followed by a table, and the second section is separated between more than one section layout box.

Workaround: Ensure there is a paragraph between the break and the table.

All bullet list levels are exported to HTML with list-style-type:disc. Instead, they should be exported with list-style-type:disc, list-style-type: circle;, and list-style-type: square; depending on the level - Level 1,4,7 are with disc, level 2,5,8 are with circle, and level 3,6,9 are with square for the default bullet list type.

Note: There are more problems with the HTML export/import roundtrip in this use case: 

- indents FirstLineIndent, RightIndent, Left are set locally - this prevent the expected changing of indent when changing the list level.

- formatting of the bullet (font for example) is set to the paragraph.

Steps to reproduce:
- Add bullet list with three levels.
- Export to HTML.
Expected: The browser show the list preserving the bullet styles.
Actual: The browser visualizes the list with different bullet styles.

The bookmark decoration square bracket is visualized in a previous table cell if the parent table does not have content. 
The visualization of the ending bracket does not affect the location in the document of the bookmark range end.

Steps to reproduce:
Insert an empty table 3x3.
Select the entire table.
Insert bookmark.
Toggle the bookmarks. RadRichTextBox has a ToggleBookmarks method which will visualize or hide the bookmark surrounding square brackets.

You can also check the attached screenshot.

In some cases when an image is copied from an external source and pasted in the rich text box, the image is not displayed. This is caused by the Clipboard.GetImage() method used internally by the control. 

To work this around, you can subscribe for the CommandExecuting event of RadRichTextBox and manually get the image from the clipboard.

private void Rtb_CommandExecuting(object sender, Telerik.Windows.Documents.RichTextBoxCommands.CommandExecutingEventArgs e)

{
	PasteCommand command = e.Command as PasteCommand;
	if (command != null && (Clipboard.GetData("DeviceIndependentBitmap") != null))
	{
		//Get the image stream from the clipboard.
		//You can check the following blog post for an approach which you can use to get the image properly:
		//https://www.thomaslevesque.com/2009/02/05/wpf-paste-an-image-from-the-clipboard/
		this.radRichTextBox.InsertImage(imageStream, "jpeg");
		e.Cancel = true;
	}
}	

MS Word clears the character style property of a span when a new value equal to the default value is applied. This is applicable only when the span or the parent paragraph does not have associated style which has a local property defined for the same style property.

There is not defined behavior of tables without fixed column width in FlowNoWrap. They try to fill the unlimited space, so only tables with fixed width can be used in this mode. The expected behavior might be fitted column width to its content or auto fitted table width to window.

This can cause a hang of the application or unexpected behavior while working with the table (e.g. the thumbs for resizing the column width appear after the column border instead over it).

Workaround: Subscribe to CommandExecuted, get the inserted table and set a fixed width to it.

Available in R1 2018 SP2 release version.

When the user enter text using the keyboard the PositionChanged event of the CaretPosition is not fired.
The item's status changed to Declined - the LocationChanged event can be used to track when the location of the position has been changed.

XamlParseException is thrown when importing revision date time of track changes which is exported with different than invariant culture.

Steps to reproduce: 
Set the current thread culture to "new CultureInfo("nb-NO")"
Turn on track changes.
Start the RTB and enter some text.
Export to XAML.
Import the previously exported XAML file.
Observed result:  XamlParseException is thrown when parsing the revision date time object.



Available in LIB version: 2017.1.418

When the span properties are modified (e.g. a highlight color is applied), they should not affect the span properties of the text inserted after that.

This applies for all span properties. Here are a part of them:

- Highlight color

- Foreground color

- Font weight

- Font family

- Font style

Currently, all the properties applied to the current span are inherited when the user starts typing next to it.

The focus stays in the combo box.

Workaround: Attach to the DropDownClosed event of the combo box and focus the presenter:
(this.radRichTextBox.ActiveEditorPresenter as Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter).Focus();

Fix available in LIB Version 2017.2.522.

The redo command can't be executed if a content outside of a  permission range is selected. For comparison, the undo command can be executed.

Steps to reproduce:
1. Add two paragraphs to the document with text.
2. Select the first paragraph and add permission range.
3. Protect the document.
4. Add text into the permission range.
5. Press Undo (Ctrl+Z).
6. Select text outside of the permission range.
7. Press Redo (Ctrl+R).

Expected: the redo action should be executed.

Fix available in LIB Version 2015.2.515.