Steps to reproduce:

- Have the following project structure in OpenProject:
- Parent 1
- Child 1
- Parent 2
- Child 2
- Other Project
- Reportings Project
- Let Child 1, Child 2 and Other Project Report to Reportings Project
- Set First level Grouping to Child of Parent 1 or Parent 2
- Select “Hide other group”

Expected:
Child 1 is displayed in group Parent 1 and Child 2 is displayed in group Parent 2

Actual:
Child 1 and Group Parent 1 are not displayed at all. Child 2 is correctly displayed in Group Parent 2

Found in: Openproject core 3.0.0pre25 Begin of the insertion
End of the insertion