If one sets any of the Office 2010 themes to a ribbon bar with radio buttons and runs the project the radio buttons would not work.

1. Create a new application with RadRibbonForm.
2. Set the ApplicationThemeName to TelerikMetro.
3. Run the application. You will see that the quick access toolbar is visible and there are not items in it.

1. Create a new RadRibbonForm and add some tabs.
2. Set the backstage view mode.
2. Run the application. The application icon will not be visible.

If you add a maximized child form with ControlBox = false or FormBorderStyle = None, the MDI control box of the RadRibbonBar in the MDIParent should not be visible.

According to the design guidelines, the width of a ContextualTab is determined by the sum of the widths of the RibbonTabs. However, there are cases where the width of the containing tabs is less than the width needed by the ContextualTab to display its text. To handle this case, we should allow the users to set the width of the ContextualTabs.

WORKAROUND: increase the size of the inner tabs:
 private void radButton1_Click(object sender, EventArgs e)
        {
            ribbonTab1.MinSize = new Size(ribbonTab1.Size.Width+60, 0);
            radRibbonBar1.RibbonBarElement.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.UpdateLayout();
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.InvalidateMeasure(true);
            radRibbonBar1.RibbonBarElement.RibbonCaption.CaptionLayout.UpdateLayout();
        }

Add a RadRibbonForm, set AllowAero = false, save and close the form. Open it again and an exception will be thrown.

1. Create a new project and open design time.
2. Add new RadRibbonBar instance.
3. Add some tabs and in one of the tabs add some groups.
4. Select the last added group and try to drag it. Exception will occur.

The property is not serializable, thus the items are not added.

Setting the AutoSize property of RadRibbonBarGroup to false and resizing the group at design-time crashes VS.

If you set the MaximizeBox and MinimizeBox properties to false in RadRibbonForm with AllowAero = true, the maximize and minimize buttons will still appear.

When the AllowAero property of RadRibbonForm is true, the ContextualTabGroups placed on the ribbon bar do not support  HTML-like text formatting.

In some cases when the ribbon is collapsed and you click on a tab item to display its content in a popup, there is an improper top offset of the content.

To reproduce
1. Add a form with ribbon
2. Add one tab
3. Go to Code View
4. Go back to design time and add a group and a button in the group
5. Close design time and reopen it => the items are missing

RadRibbonBarBackStageView positioning should be changed, so that the control appears 2 px lower.

FIX. RadRibbonBar - the Click event of the OptionsButton is fired twice

The button that opens the BackstageView is not correctly placed when the ribbon is placed on a RadRibbonForm with aero turned on.

FIX. RadRibbonBar - setting the Font property of the control is not taken into consideration.

use radRibbonBar1.BackstageControl.Hide(); to observe the issue.

Metro theme for RadRibborBar has glitches for the application menu and quick access bar.

Incorrect layout when clearing and adding new items with controls in their Page to the BackstageView at run time.