I'm getting an extremely frustrating error where the device management menu on iOS 11.3 beta appears and disappears randomly. I have a profile set up for my developer apps which is visible under General > Profiles, but it's not allowing me to give permission to my app.
XCode error (after building the app)
iOS error (after attempting to start the app)
General Menu
After clicking Profile
Profile Menu
Nowhere in these menus is a Device Management tab like XCode claims. The weird part is this issue is intermittent. Every so often I magically find that the Profiles option has become Profiles & Device Management and I can confirm the app. But not often.