A reference in DocumentFragment to RadDocument (CopySource property) can cause a memory after copy-paste between RadDocument.

Workaround:

public static bool ReleaseClipboardExReferences(
    RadDocument document)
{
    dynamic clipboardEx = new DynamicProxyObject(typeof(ClipboardEx));

    if (clipboardEx.documentClipboardData?.CopySource is DynamicProxyObject copySource
        && object.ReferenceEquals(copySource.Instance, document))
    {
        clipboardEx.documentClipboardData = null;
        return true;
    }

    if (clipboardEx.CopiedDocumentFragment?.Fragment?.CopySource is DynamicProxyObject fragmentCopySource
        && object.ReferenceEquals(fragmentCopySource.Instance, document))
    {
        clipboardEx.CopiedDocumentFragment = null;
        return true;
    }

    return false;
}

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

this.radRichTextBox.InsertFragment(new DocumentFragment(doc));
e.Cancel = true;

Use the attached project to reproduce:

- Click the first button so the image is changed

- Click the second button and examine the exported HTML

Expected: the Uri is exported

Actual: the Uri is not exported.

Workaround: 

When the MEF catalog of RadRichTextBox is predefined, the PasteOptionsPopup is not automatically loaded and causes NullReferenceException in the presenter when the users press Ctrl or Esc.

Workaround: Add typeof(PasteOptionsPopup) to the catalog.

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:

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.

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.