Unreal Engine Issues
Unreal Engine Issues
Replication errors when connecting Shipping build to Test/Development build
UE - Networking - May 14, 2024See linked UDN for more info. This issue was reported for Iris, but I believe package map errors occur in the current replication system as well. ...
Crash when seamlessly travelling from World Partition map
UE - Networking - May 9, 2024Based on the licensee's report, the crash seems to be occurring due to the WorldDataLayers actor, and setting this actor to never be dormant seems to resolve the issue. ...
UpdateDelayRandomStream can cause replicated actor to be skipped for consideration
UE - Networking - May 6, 2024When calculating an actor's NextUpdate time, a random delay is added: ActorInfo->NextUpdateTime = World->TimeSeconds + UpdateDelayRandomStream.FRand() * ServerTickTime + NextUpdateDelta; If this d ...
Package Map warnings when spawning primary asset class on server after seamless travel
UE - Networking - Apr 18, 2024This issue seems to occur due to the client keeping the NetGUID for the class/object, while the server will clean up this NetGUID during travel. When the client sends the class and its NetGUID as pa ...
Incorrect relative position on replicated child actor
UE - Networking - Apr 4, 2024The issue seems to occur when a replicated child actor is received on the client before its parent. The child actor will first be spawned at its correct global position, with its root component's p ...
In-Memory replay checkpoints incorrectly deleted when stream length is less than TimeBufferHintSeconds
UE - Networking - Mar 18, 2024The buffer start time is calculated by subtracting the TimeBufferHintSeconds from the stream length: const uint32 BufferStartTimeMS = UE::LWC::FloatToIntCastChecked<uint32>(FoundReplay->StreamInfo.L ...
MustBeMappedGUID errors after several seamless travels
UE - Networking - Feb 19, 2024This seems to be the same issue as was reported in [Link Removed], as enabling net.ResetAckStatePostSeamlessTravel resolves the issue. However, it was recently reported that disabling net.FilterGuid ...
UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future
UE - Networking - Feb 16, 2024A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...
RemoteRole of local pawn on a listen server is ROLE_AutonomousProxy
UE - Networking - Feb 15, 2024This issue was previously reported at [Link Removed], but it seems to have regressed due to the change at CL 23357753. GetNetMode is correctly returning NM_ListenServer, but APawn::PossessedBy now c ...
NMT_Failure message not received on client when listen server shuts down
UE - Networking - Feb 6, 2024Shutting down a dedicated server seems to result in the expected behavior, where both messages are received, but it may be possible for the circumstances causing the issue to occur on a dedicated se ...