I know mobile first is “experimental.” I notice a few options under the nestable slider are still stuck in reverse. If I set an option to display 3 items on Desktop, that filters all the way up into mobile. I have to set the option for all breakpoints in order for it to be acceptable. No big deal.
But for the Icon List, if I use my own SVG, and set the width or height, it only applies this style to desktop breakpoint and above, and actually inserts it into the control panel as if manually entered, and is full size at all other breakpoints.
Desktop
Tablet
Mobile