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System Preferences

How to fix Split View in macOS Mojave and Catalina

macOS has had (since 10.14) a built-in Split View mode that lets you use your full screen to display two apps side by side, each in a quasi "full screen" mode. Personally, I never use this feature—why limit yourself to just two windows?—but I know many people do.

In macOS Catalina, you activate Split View via a green button hover, which then shows this pop-up menu:

The activation method is somewhat different in 10.14, but the end result is the same—a window taking up half your display. Except when it doesn't…

As you can see, the full screen menu item works, but the two Split View entries do nothing at all—no error message, but nothing happens other than the menu vanishes.

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Add some System Preferences icons to the Dock

If you have certain System Preferences panels that you access a lot, and you're a Dock person (as opposed to a ⌘-Space and type person), here's a little timesaver: You can add any System Preferences panel directly to your Dock. You can't add it to the left side, as the individual panels aren't applications. But they are documents, so you can add them to the right side of the dock—just drag and drop from Finder.

You'll find the System-provided panels in /System/Library/PreferencePanes; third-party panels may appear in either your user's Library/PreferencePanes folder, or the top-level /Library/PreferencePanes folder. Find the one(s) you'd like in your Dock, then just drag and drop.

You can, of course, keep System Preferences itself in your Dock, and then right-click to see a list of all preference panels. For those panels you access often, though, this method is much quicker.