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.