Hello,
1. When enabled pageable and filter data to disaplay message "No records to display". Then message "No records to display" is shown after pagable toolbar
https://dojo.telerik.com/IgUwuYAn/10
2. While data not loaded size of tree is bigger then his container. Look this:
https://dojo.telerik.com/IgUwuYAn/11
3. When default expanded: false, page toolbar is not updated after read data.
Try: expand some rows for add 2 pages, then press refresh, you will see 2 buttons of pages, but one row.
https://dojo.telerik.com/IgUwuYAn/12
In my app i have more then 1 page data, but i not see other pages buttons