Angular 5 adds 'ng-star-inserted' in some classes - what is that?

Question

I'm seeing that among the classes added to an element, sometimes there's this 'ng-star-inserted' added as well and I'd like to know more as to why is it there?

Answer 1

It's a class name that is used internally by the BrowserAnimationsModule when animating entry and leaving transitions. You can see it in the source code here.

Answer 2

This class cause problem with the UI so need to replace with a <ng-container *ngIf=""></ng-container>