Strip quotes not working when email contains formatted signature or image attachments

Summary

When email contains formatted signature , the email doesn't get stripped. The entire email added as comment.

Environment

Cloud

Steps to Reproduce

1. Create a Service Desk project
2. Add a mail channel to the project
3. Create an issue through mail
4. Trigger a notification to be send from JIRA towards the customer account
5. The notification will contain the —Write replies above—. Write a reply above this line, and perform one of the following:
   • Apply some color changes to the text in the mail.
   • Add an attachment and then some description.
6. Send the mail.

Expected Results

The mail body gets added to the Service Desk request where only the text above the —Write replies above— gets added

Actual Results

The whole body content will get added to the request, including the original notification content originating from Service Desk.

Workaround

Removed the signature.