Ok. Chris, I think it is working? However, you have to log out and then log back in to see the changes.
1. Go to Settings and make the changes on the Start Page from Drop Down Menu.
2. Click Save Changes.
3. Log out and Log Back in.
The first page you see is the one you selected. However, if you choose Nav Page Home from the My Wikitree Drop Down. You do not go to the default page that you selected.
This is how it works on Both Chrome and Safari, current editions on OS 10.10.5