iOS 13’s rollout was soooo buggy. Most notably: backgrounded apps were routinely being killed for no reason. What was to blame?

…Apple top executives Craig Federighi and Stacey Lysik identified iOS daily builds’ instability as the main culprit for iOS 13 bugs. In short, Apple developers were pushing too many unfinished or buggy features to the daily builds. Since new features were active by default, independently of their maturity level, testers had a hard time to actually use their devices, which caused Apple’s buggy releases.

Here’s how they plan to address the problem:

Federighi suggested leaving all new features disabled by default, so testers can ensure no regressions make it into the latest build and avoid being impaired by new bugs. New features shall be enabled on-demand by testers using a new internal Flags menu, making it possible to test each new feature in isolation.

How did it take Apple to the end of 2019 before they discovered feature flags? I hope it helps 🤞