Steps to reproduce:
1. Add the 'organizations.country.enabled[regular-organization]=true' property to the portal-ext.properties file.
2. Create a parent organization (country Germany)
3. Create some child organizations (country Germany)
4. Add Portal Directory portlet to a page
5. Go to Organizations tab
=> All organizations are shown. Everything is fine.
6. Click on the action "View sub organizations" for the parent organization
=> Now only the sub organizations are shown. Everything is fine.
7. Enter the country Germany as search criteria and click search
=> The result also contains the parent organization