We're rolling out a new issue view, with a consistent appearance across Jira and one screen to view and edit. Currently, you can't change the default order of comments in the new issue view.
By default, issue comments appear in order of first dated (at the top of the issue's comment stream) to most recent (at the bottom of the issue's comment stream).
Jira admins can change the order Jira displays comments in their system settings:
- Choose > System
- Click General configuration from the sidebar.
- Click the Advanced Settings button.
- Edit the value of the
jira.issue.actions.orderproperty by clicking the existing value and changing it from
- Click Update.