Blueprints might get corrupted after inheriting multiple times.

UE - Gameplay - Blueprint - May 17, 2024

Blueprints might get into a corrupted state when they are inherited for a big number of times. Starting from a C++ class, if you then create a BlueprintClass from the C++ class, and keep creating ne ...

"Literal Enum" BP node outputs wrong value when the input pin is connected

UE - Gameplay - Blueprint - May 17, 2024

This behavior was not observed up to UE 4.19, but it can be reproduced in all versions from 4.20 to 5.4. When a "Literal Enum" node is used inside a blueprint and an enumeration value is chosen fro ...

FDeferredDecalProxy cannot be initialized to not fade even if FadeDuration is set to 0

UE - Rendering Architecture - May 16, 2024

FDeferredDecalProxy always fade because InitializeFadingParameters is always called and leaves InvFadeDuration at 1.0 and the LifetimeAlpha calculation in FDeferredDecalPS::SetParameters gets a very ...

FFragmentTypeParameters is missing a default initialiser for FFragmentTypeParameters::Flags

UE - Anim - Sequencer - May 16, 2024

FFragmentTypeParameters misses a default initialiser for FFragmentTypeParameters::Flags. This can lead to Flags being left in an undefined state, which can ultimately cause non-determinism during th ...

PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node

UE - World Creation - Procedural Tools - PCG Component - May 16, 2024

PCG causes crash when UGrassInstancedStaticMeshComponent is set as a mesh entry for the static mesh spawner node. ...

Missing material bake output index entry for mesh(section)

UE - World Creation - Worldbuilding Tools - HLOD - May 15, 2024

"Reference space" when exporting LevelSequences with "Override Instance Data"

UE - Anim - Sequencer - May 15, 2024

When exporting a Cinematic Camera as FBX and importing it back, all transforms and Camera view are shifted. This happens when in Level Sequence Actor has the property "Transform Origin Actor" set to ...

Depth of field and Refraction issue

UE - Rendering Architecture - May 15, 2024

Refraction does not adjust the scene depth texture, leading to a mismatch between Scene Color samples and Scene Depth samples. ...

HiddenInGame issues with Nanite enabled meshes

UE - Graphics Features - Nanite - May 15, 2024

Nanite meshes marked Hidden in Game do not have selection outlines in the editor. ...

Water plugin: editor defaults for water wave assets are not saved

UE - LD & Modeling - Terrain - Water - May 15, 2024