code: function disableToolbarTouchEvents() {
  		editor.$( '.mce-toolbar:not(.mce-menubar)', document.body ).each( ( i, toolbar ) => {
  			toolbar.addEventListener( 'touchstart', event => {
  				event.stopImmediatePropagation();
  			} );
  		} );
  	}
docs: Capture and stop propagation on toolbar touch events. TinyMCE registers
  the `touchstart` event on buttons, redirecting them as `click` events to
  the button and preventing the default.
  
  @see https://github.com/tinymce/tinymce/blob/abffb85/js/tinymce/classes/ui/Button.js#L57-L60