Du wählst in den Einstellungen aus, ob eine aktivierte Dchrift aktiviert bleibt oder nach eiber Zeit wieder deaktiviert wird.

Von der Typeface Website:
„Persistent activation
Activate fonts whenever you need them. They're activated in-place, so no files are copied or moved. And they stay available until you deactivate them, even after restarting your Mac.

Temporary activation
Automatically deactivate fonts when you close the app or shut down your Mac. Useful when you're trying out some fancy fonts and forget to manually deactivate them later.

Auto activation
Hands-free activation of fonts and you won’t even notice it. Typeface can activate missing fonts behind the scenes right when you open design documents.“
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Scheiß der Hund drauf.