Hello,
I test samples/15_datatable/04_editing/02_tab_support.html from webix v 4.1.0 distribution and found a bug in tab keys navigation.
After pressing the tab keys, it does not move to the next cell.
The error is “TypeError: this.QD not function”
Shift + Tab works as expected, move to the previous cell.
When I test
http://docs.webix.com/samples/15_datatable/04_editing/02_tab_support.html,
there is no error.