Specific Blend Mode of Material on UMG render incorrectly when HDR is enabled

UE - Graphics Features - Jan 27, 2022

This issue occurs with the Additive and Alpha Holdout settings. ...

Alembic Caches Not Working With Lumen

UE - Graphics Features - Lumen - Jan 20, 2022

It appears that Alembic caches do not influence Lumen's indirect lighting (except for shadowing). Alembic geometry caches should influence lighting in Lumen as any other geometry in a level. I hav ...

C.haos Cloth : ClothLOD does not change when out of view

UE - Simulation - Visual - Jan 6, 2022

Cloth LOD Index is changed only during the mesh is on the screen. LOD Index is set to 0 at spawning, so clothing simulation runs as minimum LOD level until the mesh is in the field of view. It's no ...

Create a high poly version of the base sphere

UE - Content - Engine - Nov 23, 2021

We have an issue with artefacting of virtual shadow maps on low poly meshes: [Link Removed] We would like to request a higher polygon version of the sphere for UE5's release/starter content, which ...

JSON Serializer FromJson function returns true when property types don't match

UE - CoreTech - UObject - Nov 16, 2021

If the type of a property in a Json string doesn't match the expected type in the Json serializable class being created, then the value for that property will not be read in. However, FromJson still ...

Duplicate keys in TMap and TSet after using FJsonObjectConverter::JsonValueToUProperty

UE - CoreTech - UObject - Nov 16, 2021

Found here: [Link Removed] The relevant sections in ConvertScalarJsonValueToFPropertyWithContainer() use script helpers to add defaulted elements to each container and then parse straight into them ...

"Base Pass Shader" stat results are missing or display incorrect information while using Vulkan

UE - Rendering Architecture - Shaders - Nov 15, 2021

Base Pass Shader results are not showing, or showing up incorrectly when looking at the Stats results within the material editor of an Unreal Editor using Vulkan. Regression Tested: //UE4/Release-4 ...

Copying and pasting event tracks will break endpoint bindings

UE - Anim - Sequencer - Aug 6, 2021

See linked UDN for more info. There appears to be an issue with mismatching parents when copying causing this to fail. ...

DefaultEditor.ini dirtied when UpdateSingleSectionOfConfigFile is called for an object containing an array property

UE - CoreTech - Aug 5, 2021

Closing an AdvancedPreviewScene results in a call to UAssetViewerSettings::Save to save the preview scene settings, regardless of whether or not anything has been modified. This in turn calls Update ...

Buoyancy is broken in UE5: even BP with Cube SM component (mass is 1kg) and default Buoyancy Component with one default Pontoon falls on bottom of lake

UE - Simulation - Visual - Jul 26, 2021

Shorter steps:Steps 1-8 from Steps to reproduce (create level with water body)Find BP_BuoyancyExample in Content Browser (Engine>Plugins>Water Content>Blueprints)Place BP_BuoyancyExample above the w ...