http://docs.webix.com/samples/15_datatable/30_treetable/05_filter_custom.html
Uncaught TypeError: Cannot set property ‘open’ of undefined
http://docs.webix.com/samples/15_datatable/30_treetable/05_filter_custom.html
Uncaught TypeError: Cannot set property ‘open’ of undefined
Problem fixed in Webix 2.2.3 ( above sample works correctly now )
Thanks for a bug report.