Using RadTabbedWindow I noticed difficulty dragging maximized windows between monitors. It seems to happen in multi-monitor environments and only when dragging Left of the PrimaryScreen.

In the video I've included , the blue window is a standard window and can be maximized in one drag across any display.

The white window is RadTabbedWindow and the drag will default to the PrimaryScreen when dragged to the left-most display.

Any help would be appreciated. Thanks

When the Interactive Form Fields are in read-only mode, the user should not be able to change the value of the field. The associated Form Field widgets should not interact with the user, e.g. they should not respond to mouse clicks or change their appearance in response to mouse motions.

Currently, the RadRibbonTab GetChildrenCore method doesn't create automation peers for the element in the ContentPresenter for the TabStripAdditionalContent.

At this point, you can enable this by creating a custom AutomationPeer that derives from RadGridViewAutomationPeer and override its GetChildrenCore() method. This way you can manually create the peer for the AdditionalTabStripContent. This idea is shown in the attached project.

Copy/Paste a shape and then an image leads to a wrong result. 

Steps to reproduce: 

The sheet selector should hide sheets when their visibility is set to hidden or very hidden. The context menu of the sheet selector should contain Hide and Unhide options that allow to hide a sheet or unhide one of the hidden sheets.

The vertical scrolling seems to become very slow and even unresponsive, when the following conditions are met:

• left and right frozen columns count is 0
• the summary width of all columns is smaller than the width of the RadGridView element

To minimize the issue, you can set the GroupRenderMode property of RadGridView to Nested.

HeaderSizeNeeded is fired twice with the same index and affects the header row width. 

Workaround:

int prevIndex = -1;
private void grid_HeaderSizeNeeded(object sender, Telerik.Windows.Controls.VirtualGrid.HeaderSizeEventArgs e)
{ 
    if (e.Index == 0)
    {
        if (prevIndex != -1)
        {
            e.Size = 10;
        }
        else
        {
            e.Size = 100;
        }
    }  

    prevIndex = e.Index;
}