Ng-bootstrap: ng-tabset inside <form> hides controls

[lawliet616]

Bug description:

I have an ngb-tabset inside a template-driven form. The tabs contain different validated controls, but when I check the controls property of the form, only the controls on the visible tab are present. The problem is that I cannot check the validity of the entire form.

Link to minimally-working plunker that reproduces the issue:

http://plnkr.co/edit/Ub2aZN2r2LUyMpHJuvna?p=preview

Version of Angular, ng-bootstrap, and Bootstrap:

Angular: 5.0.2
ng-bootstrap: 1.0.0-beta.5
Bootstrap: 4.0.0-alpha.6

[lawliet616]

I just realized that there is a "destroyOnHide" input, so I close this issue.