"Discover Contoso" is default sample value for content snippet [Search/Title].
When you delete the value from both CRM and Portals (Front side edit) for your customization, but the "Discover Contoso" never disappears.
You need to add value "
(←space of multi byte language)
"Discover Contoso" should be invisible by deleting default sample value for content snippet [Search/Title], so portals customization would be easier for everyone.