Expected behavior

Sorter is considered in initial sorting of groups in collections

Actual behavior

Sorter is not considered in initial sorting, but after reload.
Initial sorting is via interal id

Steps to reproduce

1. Go to current demo
2. Create Classification Store
3. Create collection and some groups
4. Add groups to collection and define sorter
5. Add classification store to object
6. Add collection of group
7. Sorter is ignored, save object and reload
8. Sorting is correct after reload