iOS show wrong thumb when scroll using scroll bar

[RubyRook]

When i use scroll bar for fast scroll. List of image show wrong thumb as show in this video.

IMG_5029.MP4

After watched this video you could see camera button show with thumb of other image. I think scroll bar could be disable while on android there is no scroll bar. Or, please kindly fix it if you plan to keep scroll bar on iOS when select images.