Nanite meshes don't render to RVT

UE - Graphics Features - Nanite - Jan 16, 2023

Static meshes that use Nanite never write to RVT. We've been recommending a workaround to create a secondary non-nanite mesh component that only writes to RVT, but that is a big overhead for product ...

Ensure failing when skeletal mesh uses CapsuleIndirectShadow while Anti aliasing method is MSAA

UE - Graphics Features - Feb 23, 2023

Video of issue provided by licensee can be seen here - [Link Removed] ...

Can't disable collision on landscapes

UE - LD & Modeling - Terrain - Landscape - May 14, 2018

Disabling collision on a Landscape doesn't work when using the Collision Preset 'NoCollision'. The Landscape still generates collision on Static and Skeletal meshes. ...

HLSL translator yields duplicated texture sampling code

UE - Graphics Features - Aug 27, 2019

Result: Material will generate following HLSL code inside CalcPixelMaterialInputs(), which results in two PS texture lookups. MaterialFloat4 Local0 = ProcessMaterialLinearColorTextureLookup(Textur ...

UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers

UE - Foundation - Core - UObject - Jun 9, 2020

UObjects returned from "Get Item Children" in a TreeView widget causes an engine crash, due to invalid pointers. User has proposed the following fix: The best fix is probably such: When Slate list ...

When the default values of Instanced variables are changed in Blueprint, the variables of actors on the level don't follow the default values

UE - Gameplay - Sep 20, 2022

When the default value of an Instanced variable defined in C++ is changed, it is not reflected in the default value of an Actor placed on a Level. In the reproduction procedure, when the default v ...

MRQ - Groom Issue with Stencil Layers

UE - Anim - Sequencer - MRQ - Jan 31, 2023

There is a problem with rendering Grooms bound and attached to animated skeletal meshes when the mesh belongs to a stencil layer in both the Deferred Renderer or the Path Tracer. The groom does not ...

Renaming a variable on a Blueprint will reset that variable's value on any Child BPs

UE - Gameplay - Blueprint - Mar 25, 2023

If a variable is renamed on a blueprint, then any child blueprints will lose their default values for that variable and reset to the parent's default value. This resetting only happens with the Chi ...

Vehicle clutch not fully simulated in Chaos Vehicle Plugin

There is no manual clutch control exposed to users. For completeness this should be available via blueprint in the same way that the settering, throttle and brake are user controlled. ...

Mesh decals do not display on packed level actors

UE - Graphics Features - Apr 4, 2023