Event Driven Loading broken / Async Loading Thread broken

Or well, it starts up etc but there is something a bit strange in the log.

LogInit: FAudioDevice initialized.
LogInit: Texture streaming: Enabled
LogStats: FPlatformStackWalk::StackWalkAndDump -  0.035 s
Error: === Handled ensure: ===
Error: 
Error: Ensure condition failed: GetShadowIndex() == 0 [File:D:\Build\++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Core\Public\HAL/IConsoleManager.h] [Line: 828]
Error: 
Error: Stack: 
Error: Game.exe!FWindowsPlatformStackWalk::StackWalkAndDump()
Error: Game.exe!FDebug::EnsureFailed()
Error: Game.exe!FDebug::OptionallyLogFormattedEnsureMessageReturningFalse()
Error: Game.exe!TConsoleVariableData<float>::GetValueOnGameThread()
Error: Game.exe!FBodySetupShapeIterator::GetContactOffsetParams()
Error: Game.exe!UDestructibleComponent::UDestructibleComponent()
Error: Game.exe!StaticConstructObject_Internal()
Error: Game.exe!FAsyncPackage::EventDrivenCreateExport()
Error: Game.exe!FAsyncPackage::ProcessImportsAndExports_Event()
Error: Game.exe!FAsyncPackage::Event_ProcessImportsAndExports()
Error: Game.exe!FStringAssetReference::operator==()
Error: Game.exe!FAsyncLoadEventQueue::PopAndExecute()
Error: Game.exe!FAsyncLoadingThread::ProcessAsyncLoading()
Error: Game.exe!FAsyncLoadingThread::Run()
Error: Game.exe!FRunnableThreadWin::Run()
Error: Game.exe!FRunnableThreadWin::GuardedRun()
Error: kernel32.dll!0x0000000076DB652D
Error: ntdll.dll!0x0000000076FEC541