Enlarge / The iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max running iOS 13. (credit: Samuel Axon)

Today, Apple released iOS and iPadOS 13.1.2, as well as watchOS 6.0.1. All of the updates are focused on bug fixes.
The iOS release fixes an issue that prevented Bluetooth connectivity, plus others that stopped the Camera app and the flashlight from functioning in certain situations. Both the iOS and iPadOS updates fixed a bug that left a progress bar still visible after iCloud Backup completed its task. The updates also righted another issue affecting shortcuts on HomePods.
Here are Apple's update notes for iOS 13.1.2:

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