Scrolling to top on mobile (iPhones only)

I’m having a strange problem that appears on iPhones. Whenever I’m trying to use the before/after slider it suddenly jumps to the top of the page. I have tried disabling the “scroll to top” icon on mobile, thinking that I’m accidentally pressing it, but the problem still persists. The problem disappears once I disable the plugin and comes back when I turn it back on, so the problem is obviously caused by the plugin.

I like the plugin a lot and it does its job perfectly on desktop and android, but I need to make sure it works on iPhones as well. Any idea how to fix it?

The page I need help with: [log in to see the link]