Scroll issue only in Mozila firefox, using with malihu-custom-scrollbar-plugin

[krishnaprasadkc2]

I tried to use page scroll plugin along with malihu-custom-scrollbar-plugin. When I scroll up the page in mozila with hijacking ON status, always moving to DOWN direction and once reached the end, It will behave like a deadened. we can't move to any direction. Issue only in Mozila firefox with this custom scroll plugin.