Unreal Engine Issues
Unreal Engine Issues
A partially broken Geometry Collection ends up with garbage CollisionGroup data that can lead to strange behaviors
UE - Simulation - Visual - Apr 27, 2025A partially broken Geometry Collection (GC) ends up with garbage CollisionGroup data that can lead to strange behaviors. The licensee has noticed that a GC that goes thru a field applying ExternalS ...
FieldOfView and AspectRatio shouldn't be animated on Cine Camera Actors
UE - Anim - Sequencer - Apr 26, 2025Note visibility issues in 2025.1.1
TM - Tools - Apr 25, 2025Crash when exporting static mesh actor to FBX (Array index out of bounds)
UE - Editor - Content Pipeline - FBX - Apr 25, 2025I set the Forced LOD Model on the mesh component > 1, then tried to export, this is what causes the crash. Here is my suggested fix, we just don't use Git or I'd do a PR: In the else() branch of FF ...
Engine no longer compiles after backporting RHI thread improvements and crash fix
UE - Rendering - Architecture - RHI - Apr 24, 2025Unreal Engine 5.4 code will no longer compile after applying both the RHI improvement code changes as described in [Link Removed] and the fix for the crash described in [Link Removed]. The compilati ...
Launching multiple Editor processes in UE 5.5 can throw warnings due to USD Core plugin initialization
UE - Editor - Content Pipeline - USD - Apr 23, 2025Launching multiple Editor processes at the same time with the USD Core plugin enabled can cause warnings to be logged like the following:LogUsd: Warning: Failed to update LibraryPath for USD plugInf ...
Divergent group barriers in Lumen
UE - Graphics Features - Lumen - Apr 23, 2025Intel reported GPU crashes on their hardware caused by divergent group barriers in ScreenProbeConvertToIrradianceCS:[numthreads(THREADGROUP_SIZE, THREADGROUP_SIZE, 1)] void ScreenProbeConvertToIrra ...
Clay render: Bump setting ignore the texture rotation
TM - Rendering - Apr 23, 2025Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI
UE - Simulation - Visual - Apr 22, 2025Chaos Trailing Events not exposed to Blueprints and only accessible via Niagara Chaos DI. The licensee noticed that the Trailing event is not available to BPs. It's expected that the same data avail ...
GAS: DefaultSubobject AttributeSet becomes invalid on duplicated blueprint
UE - Gameplay - Gameplay Ability System - Apr 22, 2025When a native actor 'AMyActorClass' creates AttributeSets as a default subobject via CreateDefaultSubobject, duplicating an actor blueprint based on AMyActorClass will result in a blueprint with an ...