When PageSize is set to "All" and a new item is added to the grid's data source, the PageSize parameter is not updated, so the new item is sent to a second page. Instead of being added at the top or bottom of the page.

Reproduction

1. Run this REPL
2. Set PageSize to All from the dropdown at the bottom
3. Add a new item from Update Data or Add
4. New Item is added to the second page
5. Video Example