Icon right on navbar don't work on ios as expected

Example on android/Browser

Works Fine on Android

Example On Ios

Not work as well

page.html

<ion-header [scrollHide]="headerScrollConfig" [scrollContent]="pageContent" >
    <ion-navbar color="ticket-blue-rainbow" >
        <ion-row>
            <ion-title> {{ evento.descricao }}</ion-title>
            <ion-icon class="padding-icon" name="thumbs-up" color="light" item-right icon-right (click)="likeEvento()"></ion-icon>
            <ion-icon class="padding-icon" name="ios-heart" item-right color="danger" (click)="onClickFavorit()"></ion-icon>
            <ion-icon class="padding-icon" name="share" item-right (click)="onClickOpenModal()" color="light" style="padding-right: 10px !important;"></ion-icon>
        </ion-row>
    </ion-navbar>
</ion-header>

page.scss

 .padding-icon {
    padding-right: 15px;
    font-size: 20px;
  }

Second change in

page.html

<ion-header [scrollHide]="headerScrollConfig" [scrollContent]="pageContent" >
    <ion-navbar color="ticket-blue-rainbow" >
        <ion-row>
            <ion-title> {{ evento.descricao }}</ion-title>
            <ion-buttons right>
                <button ion-button>
                    <ion-icon name="thumbs-up" color="light" item-right icon-right (click)="likeEvento()"></ion-icon>
                </button>
                <button ion-button>
                    <ion-icon  name="ios-heart" item-right color="danger" (click)="onClickFavorit()"></ion-icon>
                </button>
                <button ion-button>
                    <ion-icon name="share" item-right (click)="onClickOpenModal()" color="light" style="padding-right: 10px !important;"></ion-icon>
                </button>
            </ion-buttons>
        </ion-row>
    </ion-navbar>
</ion-header>

But still not working!

I don’t no if this method is the most correctly, but in this situation i use this class on ios

.ios {
  page-event
 {
    .padding-ios{
      padding-left:70%!important;
    }
  }
}

and on html i used

<ion-buttons right class="padding-ios"> 
</ion-buttons>