Unreal Engine Issues
Unreal Engine Issues
Problem with material layers using interpolator nodes
UE - Rendering Architecture - Materials - Jun 7, 2024The Vertex Interpolator Material Expression appears to collapse separate instances from separate Material Layers, leading to visual artifacts when used. Also tested on UE5_Main, CL: 34200103 ...
PostReplicatedChange called for fast array item even when no values change
UE - Networking - Jun 7, 2024Unless a property is set to REPNOTIFY_Always, we compare the property's received value to the current value on the client before calling the OnRep function. However, when determining if a fast array ...
ControlRig & Sequencer: FindControlRigs returns rigs even if their track have been removed
UE - Anim - Rigging - Jun 5, 2024Constraint Actor to Rig with Editor Utility Widget is working for the first time adding to the Sequencer. However if it was deleted and added to Sequencer again, run Scripted Actor Action shows Err ...
Generated world partition maps cause AssetManager warnings
UE - Foundation - Core - Cooker - May 29, 2024When cooking world partition maps, it automatically writes out several maps in a "Generated" folder below the location of the map in the editor. In the repro above, this will create maps such as /Ga ...
Server will process moves from client with bReplicateMovement set to false
UE - Gameplay - Player Movement - May 28, 2024UCharacterMovementComponent::ReplicateMoveToServer checks IsReplicatingMovement before sending moves to the server, but the server does not check IsReplicatingMovement when processing these received ...
Actors in always loaded sublevels are not immediately recorded into replays
UE - Networking - May 24, 2024In FReplayHelper::ReplicateActor, we check Connection->ClientHasInitializedLevel(Actor->GetLevel()) to see if the actor should create a channel or not. However, the DemoNetConnection does not have a ...
LogAssetRegistry Error produces a path error when referring to assets on a junction/hard link/soft link
UE - Foundation - Core - Cooker - May 23, 2024IAssetRegistry::GetChecked().ScanPathsSynchronous() now eventually calls FPathExistence::LoadExistenceData and logs the errorFPathExistence failed to gather correct capitalization from disk for <p ...
Iris - high latency causes initial hitch for newly spawned actor's movement
UE - Networking - Iris - May 20, 2024This may possibly be due to FReplicationWriter::CanSendObject waiting for CreateConfirmation. ...
Non-terminating while loop when creating a new BP Actor and quickly switching between components.
UE - Gameplay - Blueprint Editor - May 14, 2024It is possible for the while loop in UnrealEditor-SubobjectDataInterface.dll!USubobjectDataSubsystem::GetActorRootHandle(const FSubobjectDataHandle & StartingHandle) Line 815 to not terminate when ...
Expanding pins and moving nodes in graph marks Compile as dirty
UE - Anim - Rigging - Control Rig - May 8, 2024Expanding pins and moving nodes in the graph marks the Control Rig blueprint as dirty, requiring a recompile of the entire blueprint. Blueprints do not do this. ...