Issue Summary

Sorting by Parent in team-managed projects breaks the secondary sorting clause.

Steps to Reproduce

1. Create a filter for team-managed project issues containing inside an Epic (containing a parent). JQL: project = TMP
2. Order by parent. JQL: project = TMP ORDER BY parent
3. Add another clause to sort items. JQL: project = TMP ORDER BY parent, assignee

Expected Results

Issues to be ordered by parent and then sub-ordered by assignee.

Actual Results

Issues remain ordered by parent only, no matter the second clause (i.e. assignee ASC, assignee DESC)

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available