datatable onAfterBlockSelect does not fire

Webix JS
1

For some reason onAfterBlockSelect does not fire in this snippet
http://webix.com/snippet/3ee41c0d

I click on the first row, then hold Shift and click on let’s say the fifth row.
No message is shown. Why could this be?

2

You can mouse-down on some cell and drag mouse to select a block of cells.

http://webix.com/snippet/8e92ce4b

3

This event is related to blockselect mode

For normal selection, you can use onAfterSelect or onSelectChange