Using "vertical: true" in combination with "fade: true" brings visual bug

[sebastianjung]

Yeah, headline says it all.

ie: slickOptions: { vertical: true, verticalSwiping: true, slidesToShow: 1, slidesToScroll: 1, arrows: false }

works as expected but as soon as i add "fade: true" like so

slickOptions: { vertical: true, verticalSwiping: true, slidesToShow: 1, slidesToScroll: 1, arrows: false, fade: true }

... the other slides are somehow invisible.

Just wanted to share that!

Greetings,

Sebastian