Interactive elements appearing on ipad even though set to display on desktop only

so i am following the suggestion in another thread to create symbols for the different interactive and static images that i want to display and then use custom code to show and hide them at different breakpoints based on ID. The problem is that when I give these symbols an ID it is not sticking. If I go from the designer to the dashboard the IDs disappear. Is this a bug? Thoughts? Help? I am really dumbfounded that we have to use custom hacks to get an ipad to display properly in landscape. That seems like a basic feature for a platform that claims to be pushing the web design field forward.

Edit: here is the thread that i am referring to: http://forum.webflow.com/t/responsive-breakpoint-for-ipad/10599/20