We’ve released an specific note regarding limitations that were present in Portal
CE versions (7.1x 7.2x). As these versions are supposed to be content producers for other consumers (acting as a host for applications instead of end user portal). For this reason many advanced navigation features are not present there.
SAP Note #1641352 – Navigation features are not supported in CE versions.
It will clarify the reason and purpose of the CE versions and also for those who are trying to use it as an end user portal.