Too Long; Didn't Read
Front-end developer wants a mobile form that can be filtered on mobile, and makes better use of screen real estate. On iOS, the small number of visible items makes for an awful experience with larger lists. On Android, opening the keyboard shrinks the viewport down to the visible area, but on iOS, it is just being covered by the keyboard. You need to add a spacer at the bottom of the list to make it scrollable when the list doesn't fit, but only if the keyboard isn't visible.