Description of problem: Please refer to GTNPORTAL-3423 for more details. It fixed in JBoss Portal 6.1.1 and seems related to GTNPORTAL-3247. If it is correct, please backport GTNPORTAL-3247 to EPP 5.2.x. How reproducible: 100 % Steps to Reproduce: 1. As a root user, log in to GateIn Potal. 2. Move to the dashboard. 3. Add a tab named "なかむら" and activate the tab page. 4. Click "Edit Page" Actual results: Move to first tab ("Click & Type Page Name") and IllegalArgumentException is thrown Expected results: Open editor for second tab ("なかむら")