I built my macOS app with 4430 and noticed the back/reload/address bar controls were missing. For a sanity check I then built cefclient app w/ 4430 unzipped binary and noticed the same thing, and then yet another sanity check to build cefclient app w/ 4389 unzipped binary and it was there I once again saw the controls bar.
cefclient 4389:
cefclient 4430:
I see the code in root_window_mac.mm to define the controls and from whence they are set (or turned off), but without any flags passed the controls bar appears in 4389 and doesn't in 4430.