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. 

InvalidCastException is thrown when importing a document containing multiple unclosed fields.

Code is executed after focusing the RadRichTextBox and before the previous control loses the focus.

Some dialogs like ParagraphPropertiesDialog and SectionColumnsDialog have dependency properties for defining the width of the numerics. When creating implicit style, the value of these custom properties results in 0 and they are invisible in the UI.

Workaround: Set the value of the property in the custom style. For paragraph properties dialog:

RadRichTextBox's ContextMenu should open when the Context menu key on the keyboard is pressed. 

Image inline is not transferred to the next page and is cropped when it is too big for the remaining space on the current page.

When using RadDocumentMerger to merge or append a document, and an undo group has been started, the following exception is thrown: System.InvalidOperationException: 'Clear Undo while in begin undo group'

1. Open RadRichTextBox
2. Click to Home tab -> Paragraph group-> Multilevel list button
4. Click to "Define New List Style"
5. In "Apply formatting to" select 4th level. Don't select '1','2','3' beforehand, select '4' right after '1'st level.

Observed result: All text except the 4th level is bold.

Expected result: Only 4th level text is bold.

It should be located on a new line. Instead, it is located on the same line where the text is.

When the table is split into 2 pages and the remaining part is smaller than the header it is not visualized.

HTML export of RadRichTextBox to perform font-size export in different units.

If you export a document using the HtmlFormatProvider, all style properties which contain measurement units are exported in pixel units. This makes the exported documents look much smaller when opened on devices with higher pixel density.

WORKAROUND: use Regex to find, convert and replace the font-size attributes

            HtmlFormatProvider html = new HtmlFormatProvider();
            string res = html.Export(document);
            Regex regex = new Regex(@"font-size: [0-9]*\.?[0-9]*px");
            Match match = null;

            do
            {
                match = regex.Match(res);
                if (!match.Success)
                {
                    break;
                }

                string value = match.Value.Substring("font-size: ".Length, match.Value.Length - "font-size: ".Length - "px".Length);
                double pts = double.Parse(value) * 72 / 96;
                res = res.Replace(match.Value, @"font-size: " + Math.Round(pts, 4) + "pt");
            } while (match.Success);

            File.WriteAllText("output.html", res);

Missing bookmark annotation after cut command or move selected text which includes bookmark annotation

Bullet and numbered lists are still displayed as toggled in the ribbon even though the user has broken the lists. The toggle is removed only when the user clicks over the document.

NullReferenceException when changing themes, the RichTextBox has TrackChanges enabled, and the current user is set.

Workaround: set empty user like this: 

Wrong tab stop position when copying from RichTextBox and pasting in Word.

The FontFamilly is not preserved when one is pasting from WordPad.

When the copied document fragment is replaced during paste within a single RadDocument:

ClipboardEx.SetDocument(new DocumentFragment(doc));

Ordered list are not pasted correctly.

Workaround:

Bypass paste and use the InsertFragment API

When applying a style to a document containing a list, saving it to a .rtf file and loading it back, the style is not applied to the list. 

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.

KeyNotFoundException when loading an rtf file with missing fonts