when collapse a element, there is java.util.ConcurrentModificationException --------------------------------------------------------------------------- Key: JBIDE-4539 URL: https://jira.jboss.org/jira/browse/JBIDE-4539 Project: Tools (JBoss Tools) Issue Type: Bug Components: bpm Reporter: Feng Qian Assignee: Feng Qian Fix For: 3.1.0.M3 Import the project, and click the '-' of the first If element, the issue occured -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira