Fixes for background tile widget

tilorswift/js/Tilorswift.js

@@ -141,6 +141,7 @@ export default class Tilorswift
         } else {
             document.body.style.backgroundImage = 'none';
         }
+
         this.map.innerHTML = '';
         this.map.appendChild(this.level.terrain.getElement());
         this.tilesetPicker.reloadTileset(this.tileset);