I’m using images from my posts in my slider, they work brilliantly on Firefox and Chrome on win7, but on Android (Lollipop) chrome and firefox resize the slider height on alternate images (might be just that those images are a different aspect ratio). Is this a theme issue or a platform issue?
It will quite difficult for post images to always be the same size.
The slider images need to be the correct and same size among themselves.
The NivoSlider we are using does not force image resize on mobile devices, so you get that behaviour if the images used are all different sizes/aspect ratios.