Steps to reproduce:
1. Start portal and login.
2. Add a page "AP Test" and add AP portlet to page, enable "Set as the Default Asset Publisher for This Page" in configuration page.
3. Add a WCD portlet to default home page, Add a WC from WCD, edit the WC, try to select the display page from "Display Page" section.
User could select "AP Test" page as the display page because there is a AP set as the default asset publisher for that page.
User could not set anything.