Detox now uses a custom synchronization system on iOS, developed in-house; this is the second step in phasing out our Earl Grey usage. We have tested this system extensively internally, and are confident that it should work as expected. There are no known limitations with the new system.
If you are seeing issues with the new sync system, please open an issue.
Important: apps no longer will be launched automatically — use device.launchApp().
See the link below for more details.