16.4.1(a) App Launch Delay

On two devices that I've updated with yesterday’s 16.4.1(a) security update (an iPhone 8 and an iPad Pro M1) I am suddenly seeing a 6-8 second delay before ContentView is shown when running builds from XCode -- this didn't happen before the update. On my iPhone 14 still running 16.4.1 launch time is normal, less than 1s. Is anyone else seeing this? This is happening with both debug and release builds. Interestingly, if I quit the app and run it again directly from the device the app launches and runs normally.