Hi,

We have checked both your sites, and they have similar issues with z-index.

olhut.com – https://gyazo.com/6e8c9384187e2a994447071a6ff92fa0
furniturerotansintetis.com – https://gyazo.com/014a55f48025bfcaf3e7a927da2b6e40

Apparently, you need to use the same code to both your sites that have previous product hover customization.

Regards