If you are an Apple Developer, then you know the pain associated with downloading a 12GB Xcode installer. Apple wants us to use the Mac App Store to install Xcode, which can be flaky at times.¹ The Mac App Store page indicates if you are downloading a file with a circular progress indicator, however, once the app starts installing, the circular indicator becomes less useful. Xcode takes a long time to install, and I have often thought that it was stalled.

I recently learned that if you hover your mouse over the circular progress indicator, once the app starts installing, it will show more detail about what percentage is complete. This is a welcome new feature that more users should know about. Have faith, that Xcode install will finish if you let it.