We get the wrong sender in mail notification which has been sent out if there is notification is configured for any action. It is quite confusing to see that the sender is different than the one who actually triggered/commented/acted on issue.

When a change is done on a case in jira, an email is sent and the sender is not correct.
For instance - if Jenni has made a change, it seems like Ariff has the "on behalf" sender from Jira, probably because he was the person who did most recent changes in another case than the one the email notification is about.
This is rather confusing and should be fixed.
"on Behalf"-senders should be the one who made the change, not a random Jira-user.