DockSiteLayoutSerializer calling LoadFromString causes Unloaded event to fire

Hello,

I am using an instance of DockSiteLayoutSerializer to call LoadFromString, using a dockSite as a parameter:

DefaultDockSiteLayoutSerializer.Instance.LoadFromString(_settings.Layout, _dockSite);

For some reason, somewhere in LoadFromString is firing an Unloaded event on ContentControls within the DockSite.  I don't want it to fire Unloaded because other objects are listening for that Unloaded event and reacting like it was unloaded when I am just trying to load the DockSite settings layout upon opening the view.  Oddly enough, the Unloaded event is only fired in LoadFromString when I run the program from the executable, it doesn't happen when I run from Visual Studio.  Do you know what is going on here?

Thanks,

Joel