All ideas subpages that are in a particular partition are not appearing for a user.
Release : 16.1.1
This can be due to inactive partitions.
Check to see if the partition is active or not active from Administration > Studio > Partition Models.
The following query to find out about the partition models
select a.code, a.created_date, a.created_by, a.last_updated_date,
b.code, b.ui_theme_code
from
CMN_PARTITION_MODELS a,
CMN_PARTITIONS b
where a.code = b.model_code