Steps to Reproduce

1. Call the following code from an iOS app

public static async Task<(bool isAnswerCorrect, bool isInternetConnectionAvailable)> Test ()
{
	return (true, true);
}

note: full test case in dotnet/macios#5798

2. Run on device without LLVM -> success
3. Run on device with LLVM -> failure (false is returned)

Current Behavior

Broken (regression, it works in XI stable) when enabling LLVM

Expected Behavior

Should work on both mono and LLVM fullAOT backend

On which platforms did you notice this

[x] iOS
[ ] macOS
[ ] Linux
[ ] Windows

Version Used:

2018-08 (d16-0), 2018-10 (xamarin-macios/master) and 2019-02 are all broken

Current XI stable is fine (2018-04)

Stacktrace

none