**Description**
When sorting projects and their subprojects via the work package list headers, it appears that only direct subprojects are considered.
In OpenProject.org, the sorting respects subprojects of subprojects as well (see screenshots below).

**Screenshots**

- Wrong sorting in angular.qa.finn.de considers only direct subprojects:

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- Proper sorting on openproject.org considers sub-sub-projects as well:

**QA system**

- angular.qa.finn.de
- 3.1.0pre1 Begin of the insertion
End of the insertion