Image zoom product issue on mobile

Hi, there is a little issue with product image zoom on mobile devices.
With 1° thumb it is all ok, you tap it one time – it zoom, you tap it second time – image return to its size.
But with 2° thumb or others, if you tap second time, zoomed image does not return small.

You can test it from mobile: https://woodmart.xtemos.com/shop/lighting/montes-scelerisque/

select 2° thumb (or 3° thumb) -> tap image 1 time (it zoomed) -> tap image again (it does not return small).

Thanks