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> Disney's park maps kept tracking when the app was closed

Closed or in the background?

I was under the impression (in iOS 10 and earlier), that "Always" meant anytime the app was open, and "While in use" is only when the app is in the foreground. So if an app has "Always" on for its Location Services, it will stop tracking when I swipe up and quit it.

If I've been incorrect this whole time, please pass the tinfoil.

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Additionally, with iOS 11, it seems Apple has forced the "while in use" option on apps that didn't include it on their own for location permissions.

You're correct. Manually killing an app from the recent apps list will stop it from doing background processing (e.g. tracking location). I'm not sure if they'll be allowed to start again if e.g. they receive a silent push, and I'm also not sure if they're allowed to handle geofences, but besides those two questions, killing the app stops it tracking you.

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