[Fix Incoming] Seriously damaging change to Online Subsystems in 4.20

Hi Vlad.

Our engineers have reviewed the issue, and in our tests the functionality is working as expected, so you may have something unique to your case that isn’t covered by our tests. In order for us to investigate this fully, please submit a bug report via Unreal Engine Community. Please be sure to include as much information as possible, including the exact failure, and ideally a test project that reproduces the issue.

Thank you.