Exception when using a floating ToolWindows and ToolStrip

Hi,

An exception is raised when using a floating ToolWindows containing ToolStrip.

To reproduce it,

* In a floating window : display the tooltip of the toolstrip
* dock the ToolWindow
* Try to display the same tooltip

The following exception is raised :

Cannot access a disposed object.
Object name: 'fy'.

------- Stack Trace -------
at System.Windows.Forms.Control.CreateHandle()
at System.Windows.Forms.Form.CreateHandle()
at System.Windows.Forms.Control.get_Handle()
at System.Windows.Forms.ToolTip.get_CreateParams()
at System.Windows.Forms.ToolTip.CreateHandle()
at System.Windows.Forms.ToolTip.Hide(IWin32Window win)
at System.Windows.Forms.ToolStrip.UpdateToolTip(ToolStripItem item)
at System.Windows.Forms.ToolStripItem.OnMouseHover(EventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.MouseHoverTimer.OnTick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

Any idea to solve it ?

Thanks for your help

Regards

Stéphane