You probably referenced the wrong thing in the menu - there is a Create Surface command that has an icon but the Surface is a menu placeholder for multiple commands and is not a command in itself - there are a few of those like Survey, Alignment, Corridor, Data Prep, Drafting, Edit, Field Data, File, Image, Line, Photogrammetry, Project, Reports, Takeoff, TCC, View, Window, Zoom etc. that all behave the same way - they provide a list of related commands when added to a menu. While you can add your own Icons for these if you want to, they do not have icons by default.
Alan