UIAlertController is moved to buggy position at top of screen when it calls `presentViewController:`

Question

Presenting a view from a UIAlertController moves the alert to a buggy position at the top-left corner of the screen. iOS 8.1, device and simulator.

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Answer 1

EDIT: Tested in 2020, Xcode 11.2, iOS 13

If anyone still looking for a better answer to this, then here is my solution. Use updateConstraints method to readjust the constraints.

your_alert_controller_obj.updateConstraints()