In TestFlight IsInstalledFromStore() returns false.
In Android closed track where i could test returns true (or null) as expected.
To be more precise i use following code snippet:
bool isRootOrJailbreak = CrossBreachDetector.Current.IsRooted() == true;
bool notFromStore = CrossBreachDetector.Current.InstalledFromStore() == false;
bool isVirtualDevice = CrossBreachDetector.Current.IsRunningOnVirtualDevice() == true;
if (isRootOrJailbreak || notFromStore || isVirtualDevice)
{
}
both two iOS testers i have confirm the phones are not jailbroken.