Unreal Engine Issues

Memory leak in FMaterialPSORequestManager

Context: FMaterialPSORequestManager::PrecachePSOs() is called at runtime when an asset utilizing a material is loaded. This occurs during engine init, travel, and when any async or synchronous load ...

UEditorEngine::OnAllPIEInstancesStarted() called prematurely, multiple times, while PIE clients are starting

Context UEditorEngine::OnAllPIEInstancesStarted() is a virtual function that gets called when launching Play-in-Editor. It can be overridden if the game project chooses to introduce a subclass of U ...

When Constrain Aspect Ratio is enabled, the display position of DrawDebug rendering becomes misaligned

Display DrawDebugSphere at the DefaultPawn's positionSet bConstrainAspectRatio=true on the DefaultPawn's CameraComponent Setting bConstrainAspectRatio=true in CameraComponent causes DrawDebug renderi ...

Multicast RPCs may be sent to clients in a different level with Replication Graph

UReplicationGraph::ProcessRemoteFunction does not check if the client has the same loaded world as the server when sending a multicast RPCs. For actors that are persisted partway through a seamless ...

Material Analyzer misreports static params for Material Layers

When analyzing materials that use Material Layers, Material Analyzer reports that multiple Material Instances “share the same static parameter array” and therefore recommends reparenting so that onl ...

[Enhanced Input] The action instance data is incorrectly reset when you call "Add mapping context" on the same mapping multiple times

This is somewhat related to [Link Removed] Closed and was brought up by a [Link Removed] Setting the CVar input.bRespectIM ...

Clearcoat material behaves differently between 5.5 and 5.7

Starting with Unreal Engine 5.7, specular reflections on clearcoat Materials are less pronounced. Unreal Engine 5.5 tests performed on //UE5/Release-5.5/, CL: 41545209 ...

The public header file ModelingToolsEditorModeToolkit.h exposes private module definition of ENABLE_STYLUS_SUPPORT

Optimize closing the Material Editor and Material Instance Editor

[Link Removed] We always need to build texture data which requires building debug view mode shaders to do some rendering to get texture densities. Can we find another way to do this? Can we at le ...

Character unnecessary step down during PHYS_Flying mode

When MovementMode is set to PHYS_Flying, the character may unexpectedly step down by MaxStepHeight when colliding with a wall near a ceiling. This occurs because UCharacterMovementComponent::StepUp ...