Starting a Workout on Watch from iPhone Fails on Newly-Installed App

Originator:SlaunchaMan
Number:rdar://32161230 Date Originated:12-May-2017 03:03 PM
Status:Open Resolved:
Product:watchOS + SDK Product Version:watchOS 3.0 (14S326)
Classification:UI/Usability Reproducible:Always
 
Area:
Workout

Summary:
If you have an app that starts a workout on Apple Watch from iPhone, and you attempt to start a workout while the watch is still installing the app, starting the workout fails.

Steps to Reproduce:
1. Create an iPhone app that starts a workout on Apple Watch using HKHealthStore’s startWatchApp(with:completion:) method.
2. Start a workout immediately after installing the iPhone app, while it’s still installing the app on the watch.

Expected Results:
The app will finish installing and then begin the workout.

Observed Results:
The app “opens” to a blank screen with the app title in the status bar, then closes after a few seconds. The workout never starts.

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