Ionic v3 does not load all data on iOS

Question

I've a ion-list (a tabs) with items on a page, like this:

<ion-list *ngSwitchCase="'valid'">
    <ng-container *ngFor="let review of reviews_delay; let i = index">
         <ion-item class="review review-delay" (click)="showValid(i)" text-wrap>
         </ion-item>
    </ng-container>
</ion-list>

This is my scss class:

.review { 
    &.review-delay { 
        border-left: 7px solid map-get($colors, red) !important; 
        border-color: rgba(200, 61, 40, 0.4); 
    } 
}

On android all data is displayed but on iOS only the first line:

I've put the load data in ngOnInit, maybe is the wrong place?

Thanks for helping