Cause: The Portal API implementation is not handling WebUI style localization place holders in displayNames field of a navigation node. Consequence: The placeholders of the form #{my.key} are returned verbatim from Node.getDisplayNames() Workaround (if any): There is no workaround for existing portals. For new portals, one should avoid using #{my.key} placeholders in navigation.xml files. One should rather use multiple <label> elements with xml:lang attribute set, like <label xml:lang="en">My English Label</label> for English. Result: See Consequence.