Hi, I worked on md-chips most which one is angular material's default directive. I customized directive as requirement for that project also added autocomplete functionalities for that chips. I see it is very similar with md-chips also some less functional of md-chips. 'onSelect' is not fire because it can not work override directive, so customizing the ngx-chips or modify as a child directive would solve that issue.
Hope I could fix that issue easily if you send code and further explain about problem.
With 8+ years experience as a full-stack developer, I am confident of your requirements. I can build any custom modules in Laravel framework (version - 5.5, 5.4, 5.3, 5.1, 5.0, 4.2)
Have huge experience in PHP, REST API, CodeIgniter, Laravel, WordPress, NodeJS, MongoDB & AngularJS.
Quality Delivery = (Future projects + long-term relationship)
Let us discuss.
Thanks