The OOui widgets work great on mobile, so I assume we have the goal of feature parity across interfaces. However, I've noticed that draggable elements aren't supported on touch devices.
Steps to reproduce:
- Visit the mobile demo page.
- Scroll to DraggableGroupWidget demos.
- Try to drag items.
Depending on the touch mode, a touch-drag will either scroll the page, or will select an item as if it will be dragged, but then nothing happens when dragging to another location.
I've run into this limitation on two projects now, and the lack of mobile parity causes us to avoid this component where it would otherwise be useful.