Client is unable to Server Travel with the host when Seamless Travel is disabled

UE - Networking - May 5, 2022

Client is unable to Server Travel with the host when Seamless Travel is disabled. Repro Rate: 3/3 Tested this in //UE4/Release-4.27 @ CL#18319896 and the client is able to join in, it is a regress ...

Replicated Child Actor in standalone editor instance causes package map errors

UE - Networking - Apr 25, 2022

This only seems to occur if the parent is statically placed, and only when launching the instances as standalone game from the editor. If the actor is dynamically spawned or if the instances are run ...

Replicated Timelines Update runs once for Clients when you change its Play Rate

UE - Networking - Apr 22, 2022

See linked UDN for more info. This looks to be because of how OnRep_Timeline handles any changes to the component's FTimeline struct. If the timeline isn't playing, OnRep_Timeline will call SetPlayb ...

NotifyControllerChanged not always called on client

UE - Networking - Apr 20, 2022

See linked UDN for more information. ...

Allow deferred actor spawning to add network actors in FinishSpawning

UE - Networking - Mar 28, 2022

Currently an actor must be marked replicated before spawning in order to properly be added to any net drivers through AddNetworkActor. We should consider allowing that to happen later in the proces ...

Child nodes do not call PrepareForReplication unlike root nodes in Replication Graph

UE - Networking - Feb 3, 2022

Child nodes are by default not added to the PrepareForReplicationNodes array in order to prevent unnecessary calls to PrepareForReplication. However, this difference in behavior is not very apparent ...

Replicated Struct with TMap property cannot compile even with custom NetSerialize

UE - Networking - Dec 9, 2021

While TMaps are not supported for replication, previously one workaround for this was to wrap the TMap property in a container struct. Users could then implement a custom NetSerialize function for t ...

AttachChildren can be incorrect on client if parent and attached actors are spawned at the same time on the server

UE - Networking - Dec 8, 2021

See linked UDN for more info. It seems as though if both a parent actor and its attached actors are created at the same time on the server, then there is a chance the attached actors won't appear at ...

Incorrect relative location on client under certain attachment conditions

UE - Networking - Nov 30, 2021

An attached actor's relative location isn't correct on the client when the actor has its position changed to that of the parent actor before attaching with the "Keep World" location rule. On the cli ...

Replay playback does not start at 0

UE - Networking - Nov 9, 2021

Replays start playing before the player finishes loading into the level. From the player's point of view the replay starts playing 3 seconds into the replay instead of playing at 0 seconds. The pl ...