I upgraded to Sierra. Previously, when I had the dock hidden, windows could be resized to take up almost all of the screen; a 4 pixel margin was reserved for the dock. Now, when I have the dock hidden, the margin is no longer just 4 pixels: the margin is the size as the dock. I hid the dock to make extra space for my windows, but it seems like that benefit of hiding the dock is lost. Is there a way to revert to the previous behavior?

  • Just have to check since I do not have this problem - what version of Sierra are you running ( > About This Mac) and have you rebooted after hiding the dock? It's working fine for me on 10.12.5 – Jackson1442 Jul 12 '17 at 3:49
  • @Jackson1442 10.12.5 – Alex Szatmary Jul 12 '17 at 3:54
  • Interesting. And you have restarted? – Jackson1442 Jul 12 '17 at 3:55
  • @Jackson1442 I'll try that. A restart hadn't previously been necessary. – Alex Szatmary Jul 12 '17 at 3:55
  • @Jackson1442 Restarting fixed it. Feel free to submit your comments as an answer. – Alex Szatmary Jul 12 '17 at 4:13


Sometimes, settings don't come into effect until you reboot your device, especially if it's a system-wide preference. Rebooting tends to solve most System Preferences-related issues.

Also, System Preferences may not tell you to reboot your device, but if something isn't working, restarting should solve your issue.

If Dock settings do not work correctly, a reboot should solve your problem.

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