Nanite compute materials don't work with VolumetricLightmap

UE - Graphics Features - Nanite - Jun 25, 2024

In editor, custom primitive data dont work on instance static meshes in bp instance

UE - Gameplay - Components - Jun 25, 2024

Changes to custom primitive data properties for instanced meshes placed in the editor work in-game but are not otherwise reflected in-editor. ...

Crash when starting PIE on a World Partition level with a Niagara Component inside nested Child Actor Components

UE - Niagara - Jun 25, 2024

Consider an actor containing a Niagara Particle System Component, which is instantiated from another actor's Child Actor Component. When initializing PIE on a World Partition level containing this s ...

Anisotropy of base disappears when clear coat is greater than 0 when Substrate is enabled

UE - Graphics Features - Substrate - Jun 24, 2024

Anisotropy from the base of a material disappears when clear coat is used. Car paint with base specular_anisotropy at 0.5 and coat at 0.0 [Image Removed] When coat is 0.0: [Image Removed] ...

UAssetDefinition doesn't allow overriding actions from base classes

UE - Editor - Workflow Systems - Jun 24, 2024

In the new implementation UAssetDefinition to define the actions for asset we found that it isn't possible to delete or hide actions from parent classes due to the ToolMenu system works with delegat ...

Editor crash when shader debugging enabled including r.shaders.optimize=0

UE - Rendering Architecture - Shaders - Jun 23, 2024

The editor crashes when activating cvar options for shader compilation and debugging. ...

Dynamic (transient) material instance assignment lost if object spawnable

UE - Anim - Sequencer - Jun 21, 2024

Material Instance Dynamic assigned to Spawnable objects with Editor Utility Widget get reverted when hit the Save button in Sequencer. This appears to come from the Material Instance Dynamic not be ...

Reliable subobject creation bunch may overwrite previously received property on the actor

UE - Networking - Jun 21, 2024

This seems to occur because of how reliability and the retransmission of dropped data is handled in the engine. If a reliable bunch is dropped, the entire bunch will be resent, but any unreliable bu ...

Join in progress clients won't receive that a net startup actor is hidden

UE - Networking - Jun 21, 2024

This seems to be because IsNetRelevantFor checks if the actor is hidden, resulting in a hidden actor not being considered relevant to clients. However, if it is a net startup actor, this will result ...

AssetRegistry has poor performance when a large map is resaved

UE - Foundation - Core - Jun 21, 2024

A licensee reports that their large map has a 10s cost in the AssetRegistry when resaved. They took a profile and found the cost is mostly in LoadCalculatedDependencies for the map, and most of that ...