When you click for second time the caret locates in the correct position. I.e. there are needed 2 clicks before first line of paragraph which starts with bookmark to set the correct caret position. It also cause the problem of incorrect selection which will select the previous paragraph.

This is because bookmarks essentially don't have position before them.

The time it takes to apply highlighting to a document in Flow layout mode is more than expected. See ticket 555863 for a sample project and document.

Steps to reproduce:
1. Type a long word in the editor. The word must be longer than the width of the page.
2. Set a hanging indent different than the default one.
3. Select part of the word starting from the beginning of the paragraph.
4. Add an annotation range, e.g. a Comment

Result: The hanging indent is not properly reflected in the editor.

After you have inserted a new row from the context menu of the RadRichTextBox, it becomes selected and then if you want to add a new row from the context menu again, the option is disabled. 

You should be able to add a new row, so the insert command must be enabled.

A "FontSize" setting cannot be applied to multiple paragraphs when the font size of the character at the beginning of selection is equal to the value which is going to be set.
Update: the issue is duplicate of http://feedback.telerik.com/Project/143/Feedback/Details/173836 .
The fix will be included in 2016 Q1.

The spellchecker does not recognize words with non-breaking spaces between them as separate.
A workaround when pasting text into the RadRichTextBox is to subscribe to the CommandExecuting event of the control, get the paste text from the clipboard and replace all non-brekaing spaces with spaces.

private void editor_CommandExecuting(object sender, Telerik.Windows.Documents.RichTextBoxCommands.CommandExecutingEventArgs e)
        {
            if (e.Command is PasteCommand)
            {
                var pasteText = Clipboard.GetDataObject().GetData("HTML Format") as string;
                if (pasteText != null)
                {
                    pasteText=  pasteText.Replace("&nbsp", " ").Replace(' ',' ');
                    var originalDataObject = Clipboard.GetDataObject();
                    DataObject dataObject = new DataObject();
                    foreach (string format in originalDataObject.GetFormats())
                    {
                        dataObject.SetData(format, originalDataObject.GetData(format));
                    }
                    dataObject.SetData("HTML Format", pasteText);
                    Clipboard.SetDataObject(dataObject);
                }               
            }
        }

Currently, CopyHyperlink command (Context menu over hyperlink -> Copy Hyperlink) puts hyperlink text in plain text format in the clipboard. Instead, it should put the URI. This way when the user pastes in a plaint text editor, they will get the URI.

Workaround: The user could copy the text from the Edit Hyperlink dialog instead. 

The issue is reproduced with Marathi IME. Type some letters, press and release shift, then press space. The result is that the current IME text is duplicated. 

When document model is used in multi-threaded scenario, all image sources need to be frozen. Expose a method that does that out of the box.

Workaround: Solution with the public API available is in the attached freezeImagesInRadDocument.zip. 

The fix will be available in our official release 2015 Q1 .

Local properties are not exported to HTML when style is applied over document element (paragraphs, spans, tables) in case the HtmlExportSettings.StyleExportMode is set to Inline and HtmlExportSettings.StylesRepositoryExportMode is ExportStylesAsCssClasses (which is the default value).

Workaround: Set HtmlExportSettings.StylesRepositoryExportMode to DontExportStyles. This way properties are exported as local properties.

Steps to reproduce:

- Using the Styles dialog, create new "character" style.
- Apply the style over a span with a text.
- Set some local properties to the span - font size or fore color.
- Set HtmlExportSettings.StylesExportMode = StylesExportMode.Inline
- Set HtmlExportSettings.StyleRepositoryExportMode = StyleRepositoryExportMode.ExportStylesAsCssClasses
- Export to HTML.

Expected: Both style and local properties are exported.
Actual: Only the style will be exported.

It seems the height of the line is not properly calculated for specific fonts which leads to difference in the way the documents look. 

Document with one full page of text formatted with Arial Unicode MS looks shorter in RadRichTextBox.

I am constructing a RadDocument in code. The document is protected, but contains several permission ranges where editing is allowed. The sections where editing is allowed contain some custom readonly ranges to further restrict editing. When I assign the RadDocument to the Document property on a RadRichTextBox, I get the exception and stack trace below in the RadDocument.IsInNonEditableRange function. I am using UI for WPF version 2014.1.331.40. The exception and stack trace are:
System.InvalidOperationException: Sequence contains more than one element
   at System.Linq.Enumerable.Single[TSource](IEnumerable`1 source)
   at Telerik.Windows.Documents.Model.RadDocument.IsInNonEditableRange(Inline inline)
   at Telerik.Windows.Documents.Model.PermissionChecker.CanExecuteRespectingWrappingReadOnlyRanges(RadDocument document, Boolean respectReadOnlyRanges, DocumentSelection selection, DocumentPosition position)
   at Telerik.Windows.Documents.Model.PermissionChecker.CanExecuteRespectingRanges(RadDocument document, CanExecuteBehaviorInProtectedDocument canExecuteBehaviorInProtectedDocument, Boolean respectReadOnlyRanges, Boolean respectNonDeletableRanges, Boolean forDeleteOperation, DocumentSelection selection, DocumentPosition position)
   at Telerik.Windows.Documents.Model.PermissionChecker.CanExecuteRespectingRanges(RadDocument document, CanExecuteBehaviorInProtectedDocument canExecuteBehaviorInProtectedDocument, Boolean respectReadOnlyRanges, Boolean respectNonDeletableRanges, Boolean forDeleteOperation)
   at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommandBase.CanExecuteRespectingRanges()
   at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommandBase..ctor(RadRichTextBox editor)
   at Telerik.Windows.Documents.RichTextBoxCommands.SelectionEnabledCommand..ctor(RadRichTextBox editor)
   at Telerik.Windows.Documents.RichTextBoxCommands.CutCommand..ctor(RadRichTextBox editor)
   at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommands.get_CutCommand()
   at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommands.InitializeApplicationCommandsMapping()
   at Telerik.Windows.Documents.RichTextBoxCommands.RichTextBoxCommands.get_ApplicationCommandsMapping()
   at Telerik.Windows.Documents.UI.DocumentWebLayoutPresenter.OnOwnerChanged()
   at Telerik.Windows.Documents.UI.DocumentPresenterBase.set_Owner(RadRichTextBox value)
   at Telerik.Windows.Controls.RadRichTextBox.InitActiveEditorPresenter(Boolean clearTextRelatedObjectPools)
   at Telerik.Windows.Controls.RadRichTextBox.OnApplyTemplate()
   at System.Windows.FrameworkElement.ApplyTemplate()
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Grid.MeasureCell(Int32 cell, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV, Boolean& hasDesiredSizeUChanged)
   at System.Windows.Controls.Grid.MeasureCellsGroup(Int32 cellsHead, Size referenceSize, Boolean ignoreDesiredSizeU, Boolean forceInfinityV)
   at System.Windows.Controls.Grid.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Border.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Control.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.DockPanel.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at MS.Internal.Helper.MeasureElementWithSingleChild(UIElement element, Size constraint)
   at System.Windows.Controls.ContentPresenter.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Border.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.Control.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.Controls.DockPanel.MeasureOverride(Size constraint)
   at System.Windows.FrameworkElement.MeasureCore(Size availableSize)
   at System.Windows.UIElement.Measure(Size availableSize)
   at System.Windows.ContextLayoutManager.UpdateLayout()
   at System.Windows.ContextLayoutManager.UpdateLayoutCallback(Object arg)
   at System.Windows.Media.MediaContext.InvokeOnRenderCallback.DoWork()
   at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
   at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
   at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
   at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
   at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)

The fix will be available in our official release 2015 Q1 SP.

Add support for TIME field. More information here:
https://support.office.com/en-us/article/Field-codes-Time-field-6cb8fcef-310a-4646-ae6b-886d88335c90?ui=en-US&rs=en-US&ad=US

The fix will be available in our next LIB release (v. 2016.1.208).