When a larger DropDownHeaderImage is set the popup of RadDropDownMenu has incorrect size.

In a right-to-left RadMenu:

Set the PopupDirection of a RadMenuItem to Left, set it back to Down, open the menu item's sub items. This results in an incorrectly aligned drop-down.

To reproduce:
Add a RadSplitContainer to a form, add two SplitPanels, add a RadContextMenuManager, add a RadContextMenu and configure it to work with the splitpanels. Run the project, display the context menusa few times until you are no longer able to.

Problem
A typical usability problem with menus I frequently see is a menu or sub-menu (grouping of menu items beneath another menu) that instantly disappears if the user mouses over the wrong pixel while trying to mouse over to the menu item.  This can be frustrating causing the user to have to retrace their steps to once again reveal the menu and this time carefully tip-toe the mouse back through the narrow parameters allowed them so as not to trip the code just waiting to remove their destination.

Solution
This is a fairly simple problem technically which requires the library author to allow from some time delay before hiding the menu.

Currently RadMenu wraps its items when there is no enough space in the parent container. A possible alternative would be to implement scrolling.

Workaround: manually add the source menu items to the destination menu by the time of opening the child form and then when you close it, you should put them back.

Workaround:
menu.DropDown.RootElement.Children[0].Children[3].Children[1].Children[2].MaxSize = new Size(0, 400);
menu.DropDown.PopupElement.MaxSize = new Size(0, 400);

- We have project called ProjectOne with a Form1 in in.
- this form inherits from RadForm
- add RadMenu with one item in it
- Create second project called ProjectTwo with Form2 in it
- make Form2 inherit from Form1.
- design time error appears.

Use the attached project to reproduce. It contains a workaround as well.

To reproduce:

1. Drop RadApplicationMenu from the toolbox on to the windows form.
2. Click on the control to open menu and select "Add new > New RadMenuSeparatorItem" option to add new item.
3. Save the form.
4. Press Ctrl+Z to undo changes. Here added RadMenuSeparatorItem is removed from the control.
5. Now press Ctrl+Y to Redo the changes.
Here added item is not added again after performing Redo action.

When you open the drop down with menu items and hover a certain item, it is selected and orange fill is applied. Try to navigate with up/down arrow keys. The respective item will be selected. However, the hovered item still remains orange. It is not correct. In MS Word for example only one item is highlighted(selected) at a time.

How to reproduce: create a RadMenu and set the VisualStudio2012Dark theme

Workaround: use the attached custom theme

How to reproduce: check the attached project and video

Workaround:
public partial class RadForm1 : Telerik.WinControls.UI.RadForm
{
    public RadForm1()
    {
        InitializeComponent();

        this.LostFocus += RadForm1_LostFocus1;
    }

    private void RadForm1_LostFocus1(object sender, EventArgs e)
    {
        //Workaround
        this.radMenu1.GetType().GetField("shouldShowChildren", System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.NonPublic).SetValue(this.radMenu1, false);
    }
}

To reproduce:

Open a WinForms project.
Add a RadMenu and add a File menu item.
Add a Search Item to the File menu
Add an imagelist with images.
Drop the File Menu and select the Search menu item
Make sure the Search menuItem is selected in the property grid
Try to assign an imageIndex to the search MenuItem. You can't

Workaround: restart Visual Studio and try again to assign the ImageIndex.

Th attached gif file illustrates the desired behavior which is supported in the MS MenuStrip. 

Please refer to the attached sample project.

1. Run the application, Excel will be opened.

2. In the Add-ins tab, click button2. A form with a RadMenu will be shown.

3. Close Excel but leave the form opened. As a result Excel hangs.

To reproduce:

Add a RadForm as MDI child to another form. Add RadMenu to the child and the main forms. Associate hotkeys as follows:

RadMenuItem item = new RadMenuItem;
item.Text = "&File";

You will notice that only the main menu can be accessed with the Alt key and the shortcut.

Workaround:
Subscribe for each childform's KeyUp event and use the following event handler:
private void childForm_KeyUp(object sender, KeyEventArgs e)
{
    Form form = sender as Form;
    if (!form.Focused)
    {
        return;
    }

    RadMenu menu = null;
    foreach (Control control in form.Controls)
    {
        if (control is RadMenu)
        {
            menu = control as RadMenu;
            break;
        }
    }

    if ((Control.ModifierKeys & Keys.Alt) == Keys.Alt && menu != null)
    {
        foreach (RadItem item in menu.Items)
        {
            int ampersantIndex = item.Text.IndexOf("&");
            if (ampersantIndex != -1)
            {
                char hotkeyChar = item.Text[ampersantIndex + 1];
                if (char.ToLower(hotkeyChar) == char.ToLower((char)e.KeyValue))
                {
                    item.PerformClick();
                    break;
                }
            }
        }
    }
}

Steps to reproduce:
Place a RadMenu in MDI parent form and open a MDI child form and then set, in runtime, the RightToLeft property to of the MDI Parent form to true.
The mdi children in Window menu item are multiplied.

When user activated the form from RadMenu's MDIList the form appears maximized.

RadMenuItem should be able to be as wide  as the Image in it, if there is not text.