TabStopsProperties dialog is non-modal dialog, but it should be modal.

Copy Content and paste in comment causes Stackoverflow Exception 

Validation visualization resets to show that contents are valid when a new validation error is added to an already failing state.

The issue is related to specific steps and is a regression released in R3 2018.

Steps to reproduce:
1. Run RadRichTextBox and insert "test" at the beginning of the document.
2. Move the caret after the 'e'
3. Press Shift+Enter to insert a line break

Observed: NullReferenceException is thrown and the UI becomes unresponsive.
Expected: The break should be successfully inserted in the content

In word, the focus is transferred to the Find and Replace dialog immediately after opening it.

In the RichTextBox control the focus is not set to the dialog when open. Selecting a word does properly add it to the dialog.

Workaround: Caret could be changed with custom implementation. More information could be found in this help article: http://docs.telerik.com/devtools/wpf/controls/radrichtextbox/ime-support#how-to-implement-your-own-ime-support

The properties applied locally to the content are not preserved and used for the new content when the user changes the paragraph indent.

Workaround: Keep the properties in a variable and apply them after executing the command:

StyleDefinition style;

private void RadRichTextBox_CommandExecuted(object sender, CommandExecutedEventArgs e)
{
    if (e.Command is IncrementParagraphLeftIndentCommand)
    {
        this.radRichTextBox.CurrentEditingStyle.CopyPropertiesFrom(style);
    }
}
        
private void RadRichTextBox_CommandExecuting(object sender, Telerik.Windows.Documents.RichTextBoxCommands.CommandExecutingEventArgs e)
{
    if (e.Command is IncrementParagraphLeftIndentCommand)
    {
        style = new StyleDefinition(this.radRichTextBox.CurrentEditingStyle);
    }
}

If the position is moved to the end of a paragraph by clicking with the mouse in the empty space just left of the paragraph text, sometimes the subsequent text input (typing, pasting) is inserted at the beginning of the next paragraph, instead of at the end of the clicked one. 

The issue is somewhat random and cannot be reproduced consistently, though it's not hard to reproduce if clicking and typing is fast enough.

When custom annotations are created by inheriting AnnotationRangeStart and AnnotationRangeEnd classes, and the reaction to the delete commands is customized by overriding the DeleteBehavior, BackspaceBehavior, and DeleteSelectedBehavior, the delete command doesn't work as expected in some cases.

The text-decoration-line CSS property is not imported because of wrong name definition in the parsing logic of HtmlFormatProvider.

In Word, slashes, dots, etc. are treated as separate words when moving the caret with Ctrl + Key.Right and Ctrl + Key.Left.

When importing an HTML file which contains table should align table cell content left and middle. Instead, it aligns them left and top.

The fix is available in our latest LIB release (v. 2015.01.0413).

The text is not committed and is still in edit mode when the control loses focus. The partial commit of content is not working as well.

The PasteSource.SameRadDocument is not respected when pasting from the same document

Xaml exported in Net Core app cannot be imported with Net Framework app

This behavior is observed when copy and paste a Chinese text wrapped in a bookmark.

Steps to reproduce:
1. Import the attached document (testDocument.docx)