Don't figure out why that resolves the issue about native scrolling

I have a page where I have this css:

.scroll-content {
  overflow:visible
}

In this page, I also have an ng-repeat.

Native scrolling is enable : JsScrolling(false)

Result is I can't scroll at all. The page is frozen.

But when I remove overflow:visible, it well works.

What is the link between this css snippet and native scrolling mechanism of Ionic?