On my first try it looks like browser issue.
I got double tap for making favorite, but if I click on item title, got redirected on first click.
Even the first tap on favorite button trigger hover effect, maybe would be worth to try with opacity = 1

@Ivan
Try following (it's made on demo already, you can test).

Open responsive.css and find this line:

Code: [Select]

@media screen and (max-width: 767px) {
Bellow it, add code:

Code: [Select]

  .simple-prod .img-wrap .switch-bars {display:block;}