4.25 ECC_GameTraceChannels default parameter value results in compile error

UE - Foundation - Cpp Tools - UnrealHeaderTool - May 18, 2020

Hidden enum entries cannot be used as default values for UFUNCTION parameters. When using any collisionchannel, the error "Hidden enum entries cannot be used as default values" is received. ...

Switching AnimLayer to child AnimBP doesn't trigger inertial blending

OLD - Anim - Jun 19, 2020

At compile time, BlendOptions array which contains BlendTime setting are created. These are copied from its own interfaces, not the parent's. The blending works fine if the parent's interface is als ...

Allow the choice to implement a BP Interface function as an event OR a function

UE - Gameplay - Blueprint Editor - Jul 22, 2020

[Image Removed] This messaging is confusing because it says "Implement Function" when really it creates an event. We need to clear up the messaging here, or provide an option to create it as a fu ...

Crash with geometry collection in es3.1 preview

UE - Simulation - Physics - Destruction - Dec 22, 2020

Material does not render correctly when launched with Cook on the fly

UE - Rendering - Architecture - Shaders - Nov 8, 2021

This issue seems to occur when using Cook on the fly on a Material that is branched on the Static switch. This issue also seems to occur on the console. Regression = Yes, issue is not reproduced // ...

Distance Cull Fade Node on Material does not work with Skeletal Mesh

UE - Rendering - Architecture - Materials - Apr 22, 2022

The licensee reports that this issue is caused by the following code not performing a Buffer update. .\Engine\Source\Runtime\Renderer\Private\ShaderBaseClasses.cpp void FMeshMaterialShaderElementD ...

Significant Refraction Differences between 4.27 and 5.0

UE - Rendering - Architecture - Materials - Apr 25, 2022

Auto-creation of SmartObjectCollection is often undesired

UE - AI - SmartObject - Nov 2, 2022

Right now whenever a new world is created in the editor we automatically spawn a SmartObjectCollection actor for it, regardless of whether there are SmartObjects on the map. The SmartObjectCollectio ...