Dynamically setting setAutoScrolling(false) causes flicker on Safari iOS

Hi,

I have a page with a couple fullPage sections at the top and regular scrolling content at the bottom. I'm setting setAutoScrolling(false) when fullPage is at the last slide. It works great in all browsers except Safari (desktop and iOS). In Safari it functions just fine, but there's a white flicker over the whole page when setAutoScrolling(false) is triggered. I have it setup [similar to this solution from another issue](https://github.com/alvarotrigo/fullPage.js/issues/3205#issuecomment-433183895).

The issue isn't reproducible in JSFiddle or CodePen. I'm guessing because of the nested windows on those pages. I attached an HTML file that shows the issue. In Safari the screen will flash white when the user scrolls to the second section.

[fullpage-safari-test.html](http://s000.tinyupload.com/index.php?file_id=77545293088813524786)

Do you have a solution for this?

Thanks,
Simon