Angular 2 Safari Bug

gistfile1.html

<div galleryScroll class='gallery-image-container hide-gallery' [class.show-gallery]='showGallery'></div>

gistfile1.txt

  private showGallery: boolean = false;

  constructor() {

    let temp = new Image();
    temp.addEventListener('load', () => {
      this.showGallery = true;
      console.log('setting true in load event listener');
    });
    temp.src = 'http://localhost:3000/assets/portfolio/00_characters/00_concept/cover.png';
  }