To reproduce:
- Associate the  ribbon with the RichtextEditor
- Subscribe to the DocumentContentChanged and start the application.
- The event is fired because the ribbon is making changes to the document.

Workaround:
void Form1_Shown(object sender, EventArgs e)
{
    ribbonBar1.AssociatedRichTextEditor = radRichTextEditor1;
}

RadRichTextEditor renders the text with a little bigger characters spacing than RadRichTextBox and MS Word.
Note: this text spacing problem can be observed in other Telerik controls as well.

To reproduce:
- Add RadRichtextEditor to a form and assosite it with RichTextEditorRibbonBar
- Start the application
- You will notice that the font is Agency FB.
- If you click in the editor the font will change.

Workaround:
void Form1_Shown(object sender, EventArgs e)
{
    radRichTextEditor1.Focus();
    ribbonBar1.GetType().GetMethod("HandleFontStylePropertiesOnCurrentEditingStyleChanged", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance).Invoke(ribbonBar1,null);
}

To reproduce:
- Add two tabs in a PageView
- Add RadRichTextEditor in the second tab
- Select some text to show the mini toolbar 
- Select the first page.

Workaround
void radPageView1_SelectedPageChanged(object sender, EventArgs e)
{
    if (radPageViewPage2.IsContentVisible == false)
    {
        radRichTextEditor1.RichTextBoxElement.SelectionMiniToolBar.Hide();
    }
}

How to reproduce:
public partial class Form1 : Form
{
    RadRichTextBox tb1;
    RadRichTextBox tb2;
    private bool shouldFocus = false;

    public Form1()
    {
        InitializeComponent();

        tb1 = new RadRichTextBox();
        this.Controls.Add(tb1);

        tb2 = new RadRichTextBox();
        tb2.Location = new Point(200, 0);
        this.Controls.Add(tb2);

        this.Load += Form1_Load;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        StyleDefinition style = new StyleDefinition();
        tb1.IsReadOnly = true;
        tb1.Document.Insert("text 1", style);

        tb2.Document.Insert("text 2", style);
        tb2.IsReadOnly = true;
    }

    private void radButton1_Click(object sender, EventArgs e)
    {
        tb1.IsReadOnly = false;
        tb2.IsReadOnly = false;
        tb1.Focus();
    }
}

Workaround:
public partial class Form1 : Form
{
    RadRichTextBox tb1;
    RadRichTextBox tb2;
    private bool shouldFocus = false;

    public Form1()
    {
        InitializeComponent();

        tb1 = new RadRichTextBox();
        tb1.GotFocus += tb1_GotFocus;
        tb1.LostFocus += tb1_LostFocus;
        this.Controls.Add(tb1);

        tb2 = new RadRichTextBox();
        tb2.Location = new Point(200, 0);
        tb2.GotFocus += tb2_GotFocus;
        tb2.LostFocus += tb2_LostFocus;
        this.Controls.Add(tb2);

        this.Load += Form1_Load;
    }

    private void tb2_LostFocus(object sender, EventArgs e)
    {
        shouldFocus = false;
        tb2.IsReadOnly = true;
    }

    private void tb2_GotFocus(object sender, EventArgs e)
    {
        if (shouldFocus)
        {
            tb2.IsReadOnly = false;
        }
    }

    private void tb1_LostFocus(object sender, EventArgs e)
    {
        tb1.IsReadOnly = true;
    }

    private void tb1_GotFocus(object sender, EventArgs e)
    {
        if (shouldFocus)
        {
            tb1.IsReadOnly = false;
        }
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        StyleDefinition style = new StyleDefinition();
        tb1.IsReadOnly = true;
        tb1.Document.Insert("text 1", style);

        tb2.Document.Insert("text 2", style);
        tb2.IsReadOnly = true;
    }

    private void radButton1_Click(object sender, EventArgs e)
    {
        if (shouldFocus)
        {
            tb2.Focus();
        }
        else
        {
            shouldFocus = true;
            tb1.Focus();
        }
    }
}

To reproduce:
- Add comment and try to select the text with the mouse.

Workaround: use keyboard to select the desired text

To reproduce:
- Create a document in Word and add image watermark to it.
- Open the document in RadRichtextEditor

Add similar functionality as MS Word.

To reproduce:
- Add some full pages to the editor. 
- Remove all margin from the print settings and document settings.
- PrintPreview the document.
- Seth the print preview dialog zoom to 100% and compare the documents.
- You will notice that the print document's content is smaller.

To reproduce: 
1. Create a UserControl.
2. Drag from the Toolbox a RichTextEditorRibbonBar and drop it onto the UserControl.
3. Use the following code:
Sub New()
    InitializeComponent()
    Me.RichTextEditorRibbonBar1.CloseButton = False
    Me.RichTextEditorRibbonBar1.MinimizeButton = False
    Me.RichTextEditorRibbonBar1.MaximizeButton = False
End Sub

You will notice that the header is cut off.

Workaround: in order to hide the system buttons, use the following code:

 Me.RichTextEditorRibbonBar1.RibbonBarElement.RibbonCaption.SystemButtons.Visibility = Telerik.WinControls.ElementVisibility.Hidden

To reproduce:

Import the attached sample.html in RadRichTextEditor. Afterwards, export the content by using HtmlFormatProvider. You will notice that the page breaks are not exported and if you import the exported file, you will see the difference. Please refer to the attached screenshot.

Whed the form is resized at some point the text of the items is not visible and there is a lot of free space.

To reproduce:
- Export rtf file with a bullet list - use the old RadRichTextBox.
- Import the file in the RadRichTextEditor in WebLayout mode.
- The entire list is shifted to the left and the bullets are not visible.

The issue is present because the old RadRichTextBox was exporting bullets with negative indent and the WebLayout mode always starts from 0.

To reproduce:
- Create new application with a richtextbox in it.
- Build it and merge the assemblies.
- Start the application type some text then select a part of it and try to do something else.
- Note that this occur only the first time when the application is started.

When the border thickness is increased the table size should be increased as well - like in Microsoft Word.

1) Launch the RadRichTextEditor
2) enter some text (at least three lines)
3) select the whole content and apply bullets/ numbers 
5) Since the whole content is already selected, open the font color dialog box and try to apply a color (say red color)
6) Notice for the last item in the list , the selected color is not applied to the bullets/ numbers as shown in the attached figs