This has been replied in support ticket #9766:
can you please post your suggestion at NopTemplates' uservoice forum:
The feedback there is taken into consideration when developing new features.
just add this code into the custom head styles panel in your theme administration:
It should fix your issue. If you still have trouble with it, please start a support ticket.
can you please open a support ticket and provide us with a link to your site there?
can you please provide us with a link to your site (where there is a slider with directional navigation enabled) so we can inspect your current situation?
I tested the default slider on Google Nexus and Motorola G and could not reproduce the problem, the page was scrolling normally.