How to get rid of a bug on iPhone?

Question

css

Description of the bug:
When scrolling, a glare appears at the top or bottom (depending on the direction of the scroll) for a few hundred milliseconds of black color (like the body color).
Tracked dependencies:

1. The bug is only on the iPhone, possibly related to ios, not only on the phone
   
2. The appearance of the bug depends on the power. Since on newer models it is almost absent and not as noticeable, on older models it is more often and more noticeable.
   

Additional Information:

1. Link to the video with the bug (best seen at 21 seconds onwards)
   
2. The site uses a swiper slider
   
3. Link to site
   

Answer 1

apparently your swiper does not work correctly, you need to either issue an issue and dig into the library, or change the library to some more suitable alternative