Hi.
I'm using JIRA standalone version(v7.5.0#75005-sha1:fd8c849).
I found a bug.
I can't receive the email when JIRA issue was closed.
All "issue closed" of events member didn't received the email.
Only this bug happened in "issue closed" events.
I'm using default notification scheme. I just add my project roll at "issue closed" of events.