Steps to reproduce:
1. Create a form that is MDI Parent
2. Create a form that would be and MDI Child.
3. Add a RadSplitButton to the MDI Child form and set it's anchor to Bottom | Left.
4. Set the WindowState of the MDI Child to be Maximized.
5. In a Form.Load event handler of the MDI Parent add an MDI Child form.
Run the project and you will see that the RadSplitButton is in the wrong location.

To reproduce: 
1. Open the Demo application >> Button example.
2. Change the theme to TelerikMetroBlue.
3. Click with the right/middle mouse button and you will notice that the button clicked states is indicated.

Workaround: remove the MouseDown state in Visual Style Builder for the fill element as it is illustrated on the attached screenshot.

No matter what is the toggle state of the ToggleButton, when disable always shows as ToggleState.Off

Please look at the attached screenshot.

Workaround:
RadRadiomark radioMark = this.radRadioButton1.ButtonElement.Children[1].Children.Last() as RadRadiomark;
radioMark.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;

IMPROVE. RadRadioButton should take its parent BackColor (not the form color) when its BackColor property is set to Transparent.

When image is being inserted to the ActionButton in RadSplitButton the ArrowButton might get overlaped if the text of the ActionButton is very long.

Workaround is to subtract the width of the image from the width of the text manually.

int actionButtonWidth = radSplitButton1.DropDownButtonElement.ActionButton.Size.Width;
int imageWidth = 40; // Sample rate should be equal to the width of the image in pixels

int desiredTextWidth = actionButtonWidth - imageWidth;

radSplitButton1.DropDownButtonElement.ActionButton.TextElement.MaxSize = new Size(desiredTextWidth, 0);

radSplitButton1.DropDownButtonElement.ActionButton.TextWrap = true;

To reproduce:
- Add some toggle buttons with image to a ribbon bar.
- Toggle some of them and the disable all the buttons.
- You will notice that the fill is incorrect and the image is not gray.

Workaround:
- Changed the UseDefaultDiabledState property for the toggle button element.
- Set transparent fill for the disabled state of the fill primitive.

To reproduce add RadDock to a form and use the following code on a button click.
           DocumentWindow document = new DocumentWindow();
            radDock1.AddDocument(document);
            document.TabStripItem.ShowCloseButton = true;
            document.TabStripItem.CloseButton.Image = image1;
            document.TabStripItem.CloseButton.ImageHovered = image2;
            document.TabStripItem.CloseButton.ImageClicked = image3;

The result is that instead of having three different images for the different states, only the main Image is displayed.

To reproduce:
1. Drag a RadButton from the ToolBox and drop it onto the form. 
2. Drag a TelerikMetroBlue theme from the ToolBox and drop it onto the form. 
3. Change the button's theme at design time. You will notice the strange border around the control.
Please refer to the attached gif file.

However, when you save the form and reopen it the button looks ok.

FIX. RadRadioButton does not show focus cues before tab key is pressed.

To reproduce:
- click a RadCheckBox with the right mouse button and you will notice the the state of the checkbox is changed.

Workaround:

public class LeftCheckBox : RadCheckBox
{
    protected override void OnMouseUp(MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Left)
        {
            base.OnMouseUp(e);
        }
    }

    public override string ThemeClassName
    {
        get
        {
            return typeof(RadCheckBox).FullName;
        }
        set
        {
        }
    }
}

To reproduce, create a RadButton on a form with the below settings.  The image is any 32x32 image. 

this.radButton1.Font = new System.Drawing.Font("Segoe UI", 11F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); 
this.radButton1.Image = global::TestPopup.Properties.Resources.Image32x32; 
this.radButton1.Location = new System.Drawing.Point(13, 13); 
this.radButton1.Size = new System.Drawing.Size(131, 44); 
this.radButton1.Text = "The Quick Brown Fox"; 
this.radButton1.TextAlignment = System.Drawing.ContentAlignment.MiddleLeft; 
this.radButton1.TextImageRelation = System.Windows.Forms.TextImageRelation.ImageBeforeText; 
this.radButton1.TextWrap = true;

Drag a button to the form and in design time set its size to 45,80

RadCheckBox can be checked by the right mouse button

RadRadioButton behaves differently from the Microsoft RadioButton in terms of keyboard navigation.

ToggleStateChanging args are not giving the old value of the button.

With Office2010Blue RadRadioButton not render correctly its state in disabled state if programmatically change the Checked state, i.e. control remains visible unchecked

If the CheckBox is not checked and the box is disabled it is not possible to programmatically change the Checked state, i.e. control remains visible as unchecked until it is enabled. Tested with Office2010Blue Theme

Please, test with Office2012Light

Sometimes after rapid clicking on RadSplitButton, its DropDown stops closing when the user clicks outside it.