When you reboot the full screen Xcode, the top menu disappears. It appears when you turn off the full screen. It looks like a bug in Xcode. Is there a solution?
When you reboot the full screen Xcode, the top menu disappears.
It's not just Xcode.
This is now a system setting, for full-screen apps.
System Preferences > Dock & Menu Bar > Automatically hide and show the menu bar in full screen