What are the most challenging aspects developers face when working with iOS 13?

When working with iOS 13, developers face several challenging aspects:

• Dark Mode: It is necessary to adapt the app's interface and resources for correct display in light and dark modes.
• Changes in SwiftUI: iOS 13 introduced SwiftUI, but it is not yet fully mature, and integration with UIKit can be complex.
• Updates in network and security APIs: For example, new requirements for HTTPS and ATS (App Transport Security) may cause issues with outdated servers.
• Changes in app lifecycle management: New methods and events require code adaptation.
• Support for new multitasking features on iPad: It is important to consider new usage scenarios.

These changes require developers to update their knowledge and adapt existing code to ensure compatibility and a better user experience.