In Angular samples for Hierarchical Grid is visible and recognizable when do you activate cell merging for Root or for Child: <img width="1125" height="242" alt="Image" src="https://github.com/user-attachments/assets/8894145a-4760-4b0d-94a4-ecdecb762338" /> For WebC: https://www.infragistics.com/products/ignite-ui-web-components/web-components/components/grids/hierarchical-grid/cell-merging#web-components-hierarchical-grid-cell-merging-example <img width="1139" height="586" alt="Image" src="https://github.com/user-attachments/assets/11bd234f-eea5-4f57-81fa-79d298a44fdc" /> and for React: https://www.infragistics.com/products/ignite-ui-react/react/components/grids/hierarchical-grid/cell-merging#react-hierarchical-grid-cell-merging-example <img width="1150" height="744" alt="Image" src="https://github.com/user-attachments/assets/1d98884e-e16b-464c-bf1f-8fdbf9c87c0b" /> It is not.