This is an odd one: Not long after midnight on Dec. 2, some iOS 11-powered iPhones started crashing.

It was an issue with local notifications, as software engineer Yoshimasa Niwa noted on Twitter (h/t iMore). And it's already been addressed by Apple, which — in an unusual twist — pushed out iOS 11.2 to all users just a handful of hours after the final developer beta version of the update went live.

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Most iOS updates arrive on Tuesdays, but the time-related crashes obviously led Apple to pull the trigger early.

If you have an app that has local notification with repeating settings, it will crash iOS Springboard on Dec. 2 (Tomorrow!) Here is a reproducible app by @takayamahttps://t.co/ecEoxFN2hM — Yoshimasa Niwa (@niw) December 2, 2017

The iPhone maker also posted a support article offering guidance to those affected by the crashes. It comes down to going into Settings > Notifications and setting "Allow Notifications" to off for each app. Once that's done, the article says, you're good to update to iOS 11.2.

The latest iOS update also comes with some additional features and fixes, including support for Apple Pay Cash (though it's not activated yet), faster wireless charging for iPhone 8/X devices, new live wallpapers, and more.

This isn't the first time users have run into issues with the latest Apple operating system. An assortment of seemingly random bugs has been evident since launch, and while Apple is actively working to fix them, new ones keep popping up.