### Steps to reproduce

1. Login as a user

2. Go to a project which has sub-projects

3. Go to work packages

4. Set the filter to Begin of the insertionexcludeEnd of the insertion Begin of the deletion show Milestones and exlcudeEnd of the deletion sub-projects

5. Export Begin of the insertionany export e.g.End of the insertion PDF Gantt chart


### What is the buggy behavior?

* The PDF export includes Begin of the insertionwork packagesEnd of the insertion Begin of the deletion MilestonesEnd of the deletion from sub-projects


### What is the expected behavior?

1. The PDF export should only show the Begin of the insertionwork packagesEnd of the insertion Begin of the deletion MilestonesEnd of the deletion for the parent project

2. The PDF export should respect the filters set


### Environment information

**OpenProject installation type**

* Hosted cloud edition