Bring back the ability to display multiple transition buttons in Issues

Problem

With the release of Jira Software Server 9.x, multiple workflow transition buttons can no longer be displayed by themselves when modifying the ops.bar.group.size.opsbar-transitions attribute value within the ../JIRA_HOME/ jira-config.properties file. 

This is a feature that existed in previous versions of Jira and has been requested by customers to be returned.

Environment

Jira Software Server 9.x

Steps to Reproduce

N/A

Expected Results

If we were to set a value in the ops.bar.group.size.opsbar-transitions attribute within the ../JIRA_HOME/ jira-config.properties file to add more buttons, we would expect to see the following:

Before:

After:

Actual Results

Out of the box, the transitions are not displayed as a drop down. Updating the attribute no longer has any affect:

Workaround

The only workaround would be to revert back to a previous version of Jira within 8.x or lower.

Notes

This was a change that was implemented recently according to Support Readiness - Lazy loading workflow transitions which is the reason for interface changes including the new UI for the transitions menu.