Share buttons don't work on Chrome

Hi there,

I have Share buttons (icons only) set on my single posts, they work just fine on Firefox and IE but nothing happens when I click on them on Chrome.
This problem appears only with “custom” icons, because official buttons work fine (but not email & print icons which appear with them in “official buttons option”), and the text links of text only option and text + icon option work fine too, but not icons…

Any idea of what causes this? Thanks!

https://www.ads-software.com/plugins/jetpack/