Duplicate subobjects when you attach to an OptionalDefaultSubobject

UE - Gameplay - Components - Jun 3, 2022

I believe that this is happening because of a problem within USubobjectDataSubsystem::FindOrCreateAttachParentForComponent where it is creating duplicates of the character mesh because the "TestScen ...

USDStage - USD Material Overrides not reading

UE - Editor - Datasmith - USD - May 31, 2022

USD material overrides do not get applied properly to a USDStage prim inside UE.     When a material override that is set to a parent prim of USD Material, the override is ignored.   A usd material ...

[MetaSounds] - Changing an Input to Modulation Parameter crashes editor due to module load order

UE - Audio - MetaSounds - May 27, 2022

Setting an Input type on Modulation Parameter crashes the editor with:Assertion failed: Pair != nullptr [File:E:\SMoyls_UE5_Release-5.0\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 643 ...

Unable to write custom stencil using Draw Material To Render Target

UE - Rendering - Materials - May 20, 2022

The attached project was created in 4.27 and is rendered on render target when checked in 4.27. However, this does not reproduce in 5.0 or later. ...

Engine crashes when building GPU Lightmass in large scenes

UE - Rendering - May 12, 2022

Engine crashes when building GPU lightmass in larger scenes. This does not occur on smaller maps like the Unreal Engine Templates. I was able to reproduce this issue in CitySamples SmallCity map. T ...

Screen Space Reflections have a visible lag on opaque materials compared to transparent/additive materials.

UE - Rendering - May 10, 2022

Screen Space Reflections have a visible lag on opaque materials compared to transparent/additive materials. See [Link Removed] ...

USDStage - Issues importing USD prims with single time-sampled attributes

UE - Editor - Datasmith - USD - May 10, 2022

There may be an issue with USD prims with time-sampled attributes - or at least an issue of user expectations.    When importing from a USDStageActor into Unreal, via the USDStage GUI, if prims hav ...

Distance field shadows follow user's movement, cutting in and out.

UE - Platform - XR - May 5, 2022

Some of the shadows appear to get cut off by user's movement though level, popping in and out of the field of vision oddly. GPU dump located in [Link Removed] Issue observed on //UE5/Release 5.0 @ ...

Ensure tripped: "Template Mismatch during attachment."

UE - Gameplay - Components - May 5, 2022