I also wondered about this, and I find that most of Apple's documentation is woeful in this respect, they suddenly mention webcredentials in their example on the Associated Domains, but they don't bother to qualify what is meant or the impact it may have. Thankfully there's a plethora of info available out there to assist where Apple have failed

Xcode 12.01, iphone 8 IOS 14.01.. This problem STILL happens... 3 years later and apple haven't fixed it.! Everything works, connects and debugs to the phone wirelessly. But...if you begin debug while the iPhone screen is locked, xcode says the iphone is locked. Unlock the phone, xcode throws a fit and still says iphone is locked... What a crock. go into xcode->windows>devices and simulators... and it has removed my phone.. nice one!... time is precious..

I am using Xcode 12.1. No errors, everything builds fine. But as soon as I added another ViewController - the IBDesignable on the previous controller doesn't work and it just shows 'designables updating' all the time. I have cleaned, closed down,, re-opened, re-built countless times. I deleted derived data (as suggested elsewhere), no difference.

Swift 5 This will highlight the pickerView row to whatever you set 'tintColor' to func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {    pickerView.subviews[0].subviews[0].subviews[2].backgroundColor = pickerView.tintColor;

Hmm, talk about unintuitive interface - poor, UX

System status has been showing App Store Connect App Processing - Outage since 5:15pm on 13 Jan, 2021 (over 24 hours without being fixed!) check this link [https://developer.apple.com/system-status/] Apple's problem