I've come across this scenario of default scrollbar shows on mozilla firefox with ember-scrollable.I've implemented an aside fixed block with 100vh height and added the above mentioned ember addon. it works fine in webkit browsers but in FF itshows its native scrollbar. is there any fix for that?
I have figured out the issue was with height:100% !important for the class 'tse-scroll-content' that overrides its dynamically generated height.