Reloading a layout can cause nullreference exception

If an xml layout has an autohide container specified on the left side of the form but the current layout has that tab group pinned down (so that there is no autohide container on that side), if you reload the layout all of the tabs are auto-hidden again but when attempting to click on any of them will generate an exception. If I move through the error then the window displays and everything runs normally again. Here is the specific contents of the error:

System.NullReferenceException: Object reference not set to an instance of an object.
at ActiproSoftware.UIStudio.Dock.AutoHideContainer.a(Boolean A_0)
at ActiproSoftware.UIStudio.Dock.DockManager.d(Boolean A_0)
at ActiproSoftware.UIStudio.Dock.DockManager.z()
at ActiproSoftware.UIStudio.Dock.DockManager.a(TabbedMdiWindow A_0)
at ActiproSoftware.UIStudio.Dock.TabbedMdiWindow.OnEnter(EventArgs e)
at System.Windows.Forms.Control.NotifyEnter()
at System.Windows.Forms.ContainerControl.UpdateFocusedControl()