Starting in 16.0.2, the Blueprint sections had mixed case applied.
Was this due to an upgrade from 15.9.3 to 16.0.2?
Release : 16.0.2
The mixed text is available starting in 16.0.2.
The upgrade does not make changes to the current Blueprint sections for stock and custom sections.
The following query can be used to find out when and who changed and published the blueprint.
select * from ODF_BLUEPRINTS
order by last_updated_date desc;