Unreal Engine Issues
Unreal Engine Issues
Using ServerTravel <MapName> command with Seamless travel causes level blueprint logic to not run on client
Networking - Jan 14, 2020When calling the ServerTravel command when using seamless travel, level blueprint logic is not being run on the client side. NOTE: Adding a small delay (tested with .2 to 2 seconds) after the "B ...
It may be possible to send an actor RPC before successful replication of the actor
Networking - Nov 27, 2019It was reported on UDN that it's possible to receive an RPC for an actor before the actor itself has replicated. The net driver tries to prevent this possibility by calling ReplicateActor in UNetDri ...
Calling GEngine->Browse from an RPC implementation causes a crash
Networking - Nov 5, 2019The engine is not resilient to calling Browse from within an RPC implementation, and likely not resilient to other ways of destroying the net driver within RPCs/OnReps. It's not something we need to ...
Connection to dedicated server no longer works on iOS devices
Networking - Oct 11, 2019"Looks like the cause of this is commit fb473a7 ( https://github.com/EpicGames/UnrealEngine/commit/fb473a7678c3669bebe0431dacaf52bcf8dee47f#diff-e6f727710008f31c0ece339b76041d2e ) included in v4.23. ...
Edited properties of replicated components created via the "AddComponent" BP node aren't correct on clients
Networking - Oct 8, 2019When properties are customized on an Add Component node, and the component is replicated, the client will create the component without the customized properties. This is likely due to subobject repl ...
Encryption handshake will fail if a seamless travel occurs during key lookup
Networking - Oct 4, 2019The encryption token challenge/response portion of the control channel handshake can fail due to a seamless travel occurring between the client's NMT_Hello being received by the server and the serve ...
Client crashes after second seamless travel when a blueprint manually placed in the world spawns a replicated actor
Networking - Sep 19, 2019When a user loads into a level that spawns replicated actors using manually placed blueprints twice using ServerTravel with Seamless Travel enabled it will crash. It looks like the engine can't find ...
OnRep_Controller is not called when Controller is set in AController::OnRep_Pawn()
Networking - Aug 6, 2019We don't call OnRep_Controller after it's set to null in AController::OnRep_Pawn, so overridden implementations won't get called. While it's a little weird to call OnReps explicitly on the client o ...
Creating Online Session always fails in Launch mode when loading another map
Networking - Aug 5, 2019Creating an Online Session and transitioning to another map does not work in a Launched Windows game. The transition event does fire but it just resets the players position on the Default map. This ...
Possessing and Unpossessing a Pawn when using NetCulling causes the Client to lock up
Networking - Aug 1, 2019In this test bench, they are using a APawn with a custom replicated Movement Component rather than using a ACharacter and they are getting a different result that ends up in a permanent softlock of ...