I created a MultiList inside a Scrollable Form. I would like to disable the MultiList' scrolling but the MultiList lacks the setScrollableY() method.
Is there a way to accomplish disabling scrolling on the MultiList.
It's not missing it's intentional. You could override isScrollableY() to return false but that's the wrong approach to disable scrolling. Lists have a lot of inherent expectations so you probably shouldn't do that as it will impact layout/rendering etc.
I would generally suggest avoiding lists.