Scroll indicator sometimes disappears in Safari iOS 8.3 bug. (On scrollable divs using "-webkit-overflow-scrolling:touch")

Hi,

After updating to iOS 8.3 on an iPad Air, it seems something is wrong with the scroll indicator on scrollable divs in Safari.

It scrolls like it should be, but randomly I just don't get to see the scroll indicator on the right side of the scrollable div.
You can see the problem when refreshing the page, sometimes the scroll indicator is visible and sometimes it is not.

Here is a small example, to view on an iPad/Safari: http://www.roidesrois.be/new_site/div_scroll.html

The code used should be correct. Before the update I never saw this problem before.

Here is an example from somebody else. http://www.quirksmode.org/css/css2/overflowscrolling.html

I see the exact same problem there too.

When using Chrome or Mercury on an iPad I don't see this problem, only in Safari.

Can someone please confirm this problem or maybe has a solution for this?
Is this a bug in Safari that needs to be solved?

Thnx in advance,

Kind regards.

Lester.