Looks like this event isn’t working.
https://docs.webix.com/api__link__ui.list_ontabfocus_event.html
@annazankevich
Ah! Now I get it. Thank you for the explanation.
P.S. “shift+tab” navigation still does not work.
@lBeJIuk,
In fact, it is a Webix bug - sorry for misguiding you.
I can confirm the issue. Thank you for reporting!
We will fix it.