Multiple servers could call BeginPlay with authority on a singleton actor

[improbable-valy]

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Description

For dynamic actors marked with Singleton (e.g. GameState or GameMode), BeginPlay may be called with authority on more than one server.

Expected behavior

For all actors, BeginPlay should only be called with authority on one server. All other servers must call BeginPlay without authority.

Current behavior

If the non-authoritative server checks out the singleton entity before triggering BeginPlay, it will call BeginPlay without authority (correct). If, however, it triggers BeginPlay before checking out that entity, it will call BeginPlay with authority.

Environment

Windows 10
UnrealGDK 0.4.2

Internal ticket

UNR-1191

[ernopp]

Singletons have been removed