Can't show menuToggle again

Ionic Framework ionic-v3
1

I have this code which, when selectionMode is not active, shows some version of the nav-bar, when it is active, it shows something else.
When going into selectionMode, the second version of the nav-bar is indeed shown. When cancelling selection mode, the first version is shown again except the menuToggle. It doesn’t appear again. Why?

<ion-header>
  <ion-navbar *ngIf="!selectionMode">
    <button ion-button menuToggle>
      <ion-icon name="menu"></ion-icon>
    </button>
    <ion-title *ngIf="customList">{{customList.listName}}</ion-title>
    <ion-buttons *ngIf="customList.listType != 'fav' && customList.listType != 'ban'" end>
      <button ion-button icon-only (click)="presentPopover($event)">
        <ion-icon name="more"></ion-icon>
      </button>
    </ion-buttons>
  </ion-navbar>
  <ion-navbar *ngIf="selectionMode">
      <ion-buttons>
        <button ion-button icon-only (click)="closeSelection()">
          <ion-icon name="close"></ion-icon>
        </button>
        <strong>{{ selectedArtists.length }} items selected</strong>
      </ion-buttons>
    </ion-navbar>  
</ion-header>