The document styles are not respected because of wrongly imported custom style name after copy-paste from MS Word and exported to HTML.

Workaround: avoid using styles with braces in their name.

To reproduce:

- Select several words by holding the control key. 

- Paste some text. 

Result: the first word is replaced, the other are deleted

Expected: the text should be pasted in all selected places

Workaround:

private void RadRichTextBox_CommandExecuting(object sender, Telerik.Windows.Documents.RichTextBoxCommands.CommandExecutingEventArgs e)
{
    if (e.Command is PasteCommand)
    {
        var ranges = radRichTextBox.Document.Selection.Ranges.ToList();
        if (ranges.Count > 1)
        {
            e.Cancel = true;

            foreach (var range in ranges)
            {
                radRichTextBox.Document.Selection.Clear();
                radRichTextBox.Document.Selection.AddSelectionStart(range.StartPosition);
                radRichTextBox.Document.Selection.AddSelectionEnd(range.EndPosition);
                PasteNewText();
            }      
        }
    }
}
public void PasteNewText()
{
    DocumentFragment clipboardDocument = null;
    string clipboardText = null;
    bool clipboardContainsData = false;

    if (ClipboardEx.ContainsText(null))
    {
        clipboardText = ClipboardEx.GetText(null);
        clipboardContainsData = true;
    }

    if (!clipboardContainsData)
    {
        return;
    }

    if (clipboardDocument != null)
    {
        this.radRichTextBox.ActiveDocumentEditor.InsertFragment(clipboardDocument);
    }
    else if (!string.IsNullOrEmpty(clipboardText))
    {
        this.radRichTextBox.ActiveDocumentEditor.Insert(clipboardText);
    }
}

To reproduce:

- Hold the control key and double click a word

Actual: the entire paragraph is selected

Expected: the current word should be selected, the existing selection should be extended.

Styles which contain "Headind1", "Headind2", "Headind3", "Headind4", "Headind5", "Heading6" in their names are exported as <h> elements to HTML. 

Moreover, is specific cases when the style of the name ends with specific symbols which are not allowed for element names in XML/HTML, e.g. "Heading1?", an ArgumentException is thrown.

As suggested in the orginal support ticket 1430154 I'm opening a separate bug reprot for the RadRichTextBox.

Visual Studio 2019 solution to reproduce the problem is attached to the bug report.

The exception is thrown in RadDocument.IsInNonEditableRange() method, which is called before measuring the document. When using a format provider, the error is thrown but the document can still be opened in RichTextBox. In binding scenario, the document is not imported.

Workaround: Ensure the document is measured before assigning it to RadRichTextBox.

The caret position does not move at the end of the line with continuous text (see attached).

To reproduce:

• Create two lists one after another
• Select the second by using the keyboard 
• Press delete and then Ctrl+z (undo)

This works fine when the list is selected with the mouse. 

To reproduce:

- Add a multilevel list to a document and export it to HTML

- Import the document again the list is changed and the values are not correct.

When a hyperlink uri contains a symbol that needs to be escaped (e.g. ')'), the exported document is corrupted.

Use Destination styles does not appear in the paste options popup control. It only appears in the RadRibbonDropDownButton.

Invoking the same Paste Options command for a second time does not close the popup. It is closed when another Paste Options command is executed.

Support should be implemented for importing height CSS property applied to HTML table cells.

Importing padding CSS style property with shorthand value produces an incorrect result. 
Example: 
Importing padding: 5px; style is imported as padding-top: 5px, padding-right: 0px, padding-bottom: 0px, padding-left: 0px

Padding syntax can be seen in the specification.

Workaround: Apply padding values for all four sides.

 Incorrect behavior when setting the table cells padding

Steps to reproduce:

- Insert a table

- Open Table Properties

- Clear the value in the "Left" field 

- Check "Same for all sides"

- Click OK

When the popup is located on the bottom side of the document and it is also close to the end of the presenter and a user opens it, then the popup goes outside the area.

When trying to import a document containing bookmark and BookmarkRangeEnd is after the last paragraph, a StackOverflowException is thrown in IntervalNode while trying to rebuild the document cache. (RadDocumentChildrenCache.RebuildTree()).

The same could be observed if the bookmark end is last in the header/footer, between table cells in the RadDocument body, or when all paragraphs after the bookmark range end are hidden (with vanish property).

Workaround: Detect the problematic annotations and remove them:
foreach (var rangeStart in document.EnumerateChildrenOfType<AnnotationRangeStart>())
{
    if (rangeStart.End == null || rangeStart.End.Parent == null || rangeStart.End.Parent.Parent == null)
    {
        //MessageBox.Show("This indicates a problem.");
        rangeStart.Parent.Children.Remove(rangeStart);
    }
}

Note: Until 2017 R2 SP1 release StackOverflowException is thrown, after this release an ArgumentException should be thrown.

There is a NullReferenceException thrown while trying to compare positions for restoring them after pasting the document. The exception is handled but after it is thrown, the layout stops updating.

To reproduce: 

protected override void OnClosing(CancelEventArgs e)
{
    this.radRichTextBox.Document = null;
    base.OnClosing(e);
}

Use the attached project to reproduce. 

- Click the "Go To endPosition" button. The Caret remains on the same line.