Clicking on PopDrop link goes to top of page

I have been using PopDrop for years and never had any problems. A big thank you to BWD.
No I am redesigning my site using Foundation 6.
PopDrop is still working fine, but if you click on a link instead of just hovering it jumps to the top of the page. This would irritate a user.
Is there a means to avoid that?
My test site can be found here:
The PopDrop links can be found here:
Unser Netz deckt mit rund 150 Fotojournalisten das gesamte Bundesgebiet ab.
Qualitativ hochwertige Fotografie. Zum Festpreis. Ohne Zusatzkosten. Mit Zufriedenheitsgarantie.

Are you sure that you have the url of the link set to javascript:void(0) as per the instructions? It sounds like you may have the link set to # which will link to the top of a page.
(Can’t check the page at the moment as I’m only on my phone)

Thank you. This was the reason.
I didn’t remember that, because my last usage of PopDrop is some time ago.