You can also click the green zoom button again for one of the apps in Split View. That app returns to its normal view, but the second app remains in a space in full-screen view. Click its green zoom button to exit full-screen view.
Spaces helps resolve the distracting problem of working with multiple apps. Learning how to set up Spaces, and how to organize your virtual desktops, can make working with lots of apps much smoother. This is especially useful on a laptop with a small display, but you may find, like me, that using this on any Mac makes it easier to work.
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