Cook failure when World Partition maps have level instances using level blueprints

UE - World Creation - Worldbuilding Tools - Level Instances - Mar 14, 2022

The following cook error results from attempting to package a WP map that has level instances using level BPs: LogCook: Error: PackageSplitter found the Generator package still in memory after it ...

[CrashReport]UnrealEditor-Bridge!void TSparseArray<TSetElement<TTuple<FString,AStaticMeshActor *> >,TSparseArrayAllocator<TSizedDefaultAllocator<32>,FDefaultBitArrayAllocator> >::Empty(int) [SparseArray.h:366]

Quixel - Mar 14, 2022

Generated from CrashReporter Error Message: Assertion failed: IsValid() [File:D:\build\++UE5\Sync\LocalInstall\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 1008] ...

ChunkDownloader does not support Apple's On-Demand Resources

UE - Platform - Apple - Mar 11, 2022

ChunkDownloader etc are meant to work with your own hosting or CDN, ie something you can download with a https:// URL. Even though [Link Removed] system does appear to be https, ChunkDownloader does ...

Installed builds of the Engine cannot package game targets with optional game features

UE - Foundation - Build - Rocket (Installed Engine) - Mar 10, 2022

The build system supports many types of flags that can be enabled in game-specific Target.cs files to enable things like logging in shipping, target-specific overrides like custom config, or enablin ...

FEditorFileUtils::SaveCurrentLevel returns true even when it fails

UE - World Creation - Worldbuilding Tools - Feb 25, 2022

In FEditorFileUtils::SaveCurrentLevel, we set the default return code as true (success) before checking validity of the current level or seeing if PromptToCheckoutLevels is successful. If we're unab ...

VertexInterpolators allocate unused params which generate extra shader ops

UE - Rendering Architecture - Materials - Feb 17, 2022

As a follow up on this: https://udn.unrealengine.com/s/question/0D54z00006yxUdXCAU/vertexinterpolators-problem VertexInterpolators are added to the HLSL code even if unused and you demand the HLSL ...

Editor lighting components not displaying correctly with diffuse off with lumen enabled

UE - Graphics Features - Lumen - Feb 2, 2022

Licensee note: "I haven’t tested with Ray tracing. I currently have lumen enable and it’s occurring there." ...

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. ...

UTextBlock::SetText doesn't work in global invalidation

UE - Editor - UI Systems - Slate - Jan 24, 2022

This happens on consoles running in 4k so DPIScale would be 2x. The character between lines is just a newline (Shift + Enter in the text field in editor), the text is set with SetText, possibly a f ...

C4D import, missing materials

UE - Editor - Content Pipeline - Datasmith - Importer - Jan 21, 2022

cf. https://forums.unrealengine.com/t/texture-problem-with-c4d-import-datasmith/272840 ...