@[deleted] -
Same issue with me, registered on forum for resolution but the forum is already flooded :-P...
Did few experiments to find what exactly causing the problem.
Its the subject of the ticket causing the issue.
1 - Case
if a user creates a new ticket with custom subject & any reply made to canned response of the ticket will create a new ticket.
but reply made to canned response of new message on ticket by staff will work fine.
2 - Case
if a user creates a new ticket with blank subject & any reply made to canned response of the ticket will not create a new ticket - Everything will go fine then.
Why ?
http://jan.imghost.us/8neE.png
email received for new ticket with custom subject is "Support Ticket Opened ", it should be "Custom Subject ".
but subject of canned response from ticket answer is perfect ie :- "Custom Subject ".
Should not happen, cause the ticket ID is mentioned in all email irrespective of email subject.
Must be a bug, Script must be trying to look for exact email subject for ticket replies not ticket id mentioned in subject.
Edit :- few more test done, problem with first mail only when subject is custom.
Is this a contribution to the topic, or a topic hijack? It is possible your issue is the same, but you didn't tell us what version you're using.Please attach images here rather than posting links to remote images.Thanks.Jack