onSelect function does not working

I think There is a problem with onSelect function. it only returns Untick and tick by writing down them to console in latest version. 
it does not return anything about current item and does not print number of  selected items as you intended to code in example usage.
I am currently using 1.3.4 and it works as expected. 
Thank you and have a nice day.
Best regards,
Beton.

