User can't edit topic

Steps to reproduce:
1) Login
2) Create new topic
3) Open created topic
4) Press edit button for the first post

AR: Nothing happens
ER: Edit topic page must be displayed

The root of issue is that 'href' attribute for edit and delete buttons is empty. It seems there is no some grant (see how edit/delete url for first post is formed in JSP).
If (say in Firebug) set href attribute of edit button to '/jcommune/topics/TOPIC_ID/edit?branchId=BRANCH_ID' edit page is opened succussfully.