Link to GitHub issue - https://github.com/telerik/kendo-ui-core/issues/4705
### Reproduction of the problem:
1. Run this dojo
2. Collapse one or more of the subCategory groups
3. Collapse the category Group
4. Expand Category
### Current behavior
The aggregate rows are missing and the locked and unlocked content is misaligned
### Expected/desired behavior
Rows should be aligned