The view should be customizable. There is an idea to make the Directive work with some external solutions like https://github.com/jkuri/ngx-slimscroll. Need to think about flexible API allowing such an integration.
Looks like this is css issue in general. Here is the example of scrollbar customization by the ngx-scrollbar library – https://stackblitz.com/edit/angular-aba8se – it does not require anything but proper css.
The view should be customizable. There is an idea to make the Directive work with some external solutions like https://github.com/jkuri/ngx-slimscroll. Need to think about flexible API allowing such an integration.