id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc,branch,changelog,apichanges,internalchanges
13515,Ticket notification failing with 'list' object has no attribute 'update',Jun Omae,Jun Omae,"Reported at gmessage:trac-users:FM_1L9QFywQ/m/KPtZ2b0iAQAJ.

==== How to reproduce

 1. `trac-admin /path/to/tracenv`
   a. `initenv 'My Project' sqlite:db/trac.db`
   b. `permission add anonymous TICKET_CREATE TICKET_MODIFY`
   c. `permission add user1 group1`
 2. `tracd -p 3000 /path/to/tracenv`
 3. Create new ticket with owner being `group1`

{{{
Trac[web_ui] ERROR: Failure sending notification on creation of ticket #1: AttributeError: 'list' object has no attribute 'update'
}}}",defect,closed,normal,1.4.4,ticket system,1.4.3,normal,fixed,,,,Fixed notification failure when permission group is used in other than Cc field.,,