I have three distinct reasons for such a feature.
- Show how many people are simultaneously editing a given JIRA item.
- Hover over the editing count to find out what user.
1) We have an OpsHub synchronization tool that keeps JIRA and Jama epics and user stories synchronized. If another JIRA user clicks in the Description text box, the JIRA epic/user story is considered in edit-mode and synchronization will be blocked. In most programs, one has to click an edit button to be in edit-mode. In JIRA many people just click on a spot in a sentence to discuss wording with a coworker and don't even know they are in edit-mode. This is not UX friendly.
2) If multiple people happen to be editing the same JIRA item (there is no lock), they have no idea someone else is editing the same item. As it turns out, the last user to save trashes the work of the first users that saved. LOST WORK!
3) If users can see who is simultaneously working on the same JIRA item, they have an opportunity to message them to coordinate contributions without losing work.
All of these issues I cited seem rather "UX Design 101" items. Most other software products alert users of potential hazards so that they do not lose work.
Will Atlassian consider these UX factors and fix these things?