Two days ago, I stopped receiving email notifications from Jira for my own changes.
I had previously set the My Changes setting on my profile to "Notify Me" so that I would receive emails for my own changes. (More recently, that setting showed up as "Get email updates for issue activity when" = "You make changes to the issue".) That has worked for years.
Today, I no longer see the My Changes setting in my profile.
The Atlassian change log says that the new Notifications space in the profile was launched last week:
https://confluence.atlassian.com/cloud/blog/2024/03/atlassian-cloud-changes-feb-26-to-mar-4-2024
"New ways to manage email notifications from Jira"

I see the new Notifications space in my profile where I can configure email notifications, but it does not have a My Changes setting.
Is the My Changes setting no longer supported, so that users can no longer opt to receive notifications for their own changes?