I have a simple array, with 6 objects in it. <http://prntscr.com/jwp54d>

I do a simple `*ngFor=""` that should and does show me 6 lines. 

```
<ng-container *ngFor="let rec of deal.recycles">
    <div *ngIf="checkReasonFilter(rec)" class="row" routerLink="/company" [queryParams]="{id: deal.withCompany}" fragment="recycled" >

```

I have added a counter to my `checkReasonFilter(rec)` function, and on load it is called **672 times**! 

How, why? Anyone has any clue?

The function is called only once, here!

Thanks!