Orbeon Vertical scroll bar in Safari and IE close

问题:

I'm using Orbeon v2017.1 and I've added an autocomplete field.

The dropdown is correctly displayed and can be scrolled with the mouse wheel, up/down arrows and by clicking on the scroll bar in all browsers except Safari and IE.

In these two browsers the dropdown menu closes when clicking on the scroll bar, but it works correctly in the two other cases. Is there a possible way to solve this?

Please don't mind the styling, I've posted a .gif of the behaviour.

I see that this is a known issue (please refer to: https://github.com/twitter/typeahead.js/issues/705) but I'm not sure how this could be solved within Orbeon.

Any help is appreciated.