How to open level asynchronously, without visible after load?

[Sveitar]

@newbprofi

CURRENT SOLUTION:
Use LoadPackageAsync function for precaching map and then manually prevent it from garbage collecting (AddToRoot maybe), and then use regular UGameplayStatics::OpenLevel when needed, it will automatically find precached map with specified name. Or just use UGameplayStatics::OpenLevel for now, without any async precache…

When I do that OpenLevel crashes with “assertion failed: NewWorld”. Im on 4.17