I added a RadLabelElement, and RadButtonElement (height 50px) to RadStatusStrip. This changes the height of the whole status strip as expected. After minimizing, then restoring the form to normal the size of the status strip is its default one.

When trying to collapse the ProgressBar inside the StatusStrip, the ProgressBar is been hidden not collapsed.

Workaround:

Changing the ForeColor property of the BorderPrimitive of the RadStatusStripElement has no effect.

To reproduce: Add a RadStatusStrip and a button element inside. Set the button's ToolTipText, start the application, hover on the element and you will notice that the tooltip will not show.

1. Add RadForm and set design time: 
this.AutoSize = true;
this.WindowState = FormWindowState.Maximized;
this.Size = new Size(750, 500); 
2. Add RadMenu with more than 10 menu items. 
3. Add RadStatusStrip with few items
4. When run the application and the items from strip are not visible 

Workaround: 
Restore the WindowState of form to Normal at design time and set the WindowState to Maximized run time in the Load event of form. Here is the snippet: 
private void RadForm1_Load(object sender, EventArgs e)
{
    this.WindowState = FormWindowState.Maximized;
}

To reproduce:
- Set RadStatusStrip SizingGrip property to false.
- When you move the mouse to the right corner its cursor is changed and you can resize.

Workaround:
- Completely remove the element with the following code:
int lastIndex = this.radStatusStrip1.StatusBarElement.Children.Count;  
this.radStatusStrip1.StatusBarElement.Children.RemoveAt(lastIndex - 1);

When you add an element to RadStatusStrip, for example RadProgressBarElement, you can't set its Visibility to Hidden/Collapsed

RadProgresBarElement's Visibility property does not work properly when it is in RadStatusStrip control.

FIX. RadStatusStrip's label element ForeColor should be black with Office2010Blue theme.