Unreal Engine Issues
Unreal Engine Issues
CoreSymbolication.framework fails to load on macOS 11 Big Sur
UE - Platform - Apple - Aug 20, 2020CoreSymbolication.framework has moved, likely into the system library cache. The function, FApplePlatformSymbolication::EnableCoreSymbolication probably needs to be updated in order to accommodate.d ...
Ray traced shadow sample settings greater than 1 cause shadow artifacts
UE - Graphics Features - Lumen - Sep 23, 2020Alternative you can follow these steps to reproduce 1. Create a new project with ray tracing enabled 2. Activate the groom plugins 3. Import a groom asset into the scene 4. Add any light type to the ...
GeometryCollectionComponent visibility flag is forced to true in BeginPlay
UE - Simulation - Visual - Jan 26, 2023The visibility flag is reset to true in UGeometryCollectionComponent::UnregisterFromISMPool. This function is called from BeginPlay. Only when ISMPoolActor is not being used, the following worka ...
Child components of child actor components in blueprints do not update transform based on parent
UE - Gameplay - Nov 10, 2015If a blueprint has a child actor component that has other components parented to the child actor component, the child components of child actor components will not update transform based on the pare ...
Components attached via AttachToComponent do not animate correctly when recorded by sequencer
UE - Anim - Sequencer - May 25, 2016When an actor is attached by the root to a bone of a skeletal mesh through the use of the "AttachToComponent" function in code, it will not follow animations when being recorded by the Sequencer Rec ...
Custom Component Being Added to Wrong Target Blueprint
UE - Gameplay - Components - Nov 2, 2015When attempting to add a custom component to a blueprint at runtime using the Add Component function, if you give the component an exposed variable, it will ignore whatever target you specify and ad ...
Unable to bind events to OnPerceptionUpdated in Blueprints
UE - Gameplay - Blueprint - Dec 18, 2017Attempting to bind an event to OnPerceptionUpdated results in an error in Blueprints. It seems that this is caused by the TArray in the function signature not being a constant reference. Current co ...
UMovieSceneTrackInstance::GetWorld() does NOT work properly in Editor
UE - Anim - Sequencer - Mar 28, 2023UMovieSceneTrackInstance::GetWorld() returns nullptr on Editor, so user can't use any function using WorldContext and Subsystem. The following code change may fix this issue UWorld* UMovieSceneTra ...
Address Sanitiser in MSVC incorrectly identifies a non-virtual destructor, but the class is not polymorphic
UE - Rendering - Architecture - Shaders - Jun 11, 2024When built with Address Sanitiser, the engine can except in FShaderPipeline::FindOrAddShader on deletion of the Shader pointer. This appears to be in error as FShader is asserted to be non-polymorp ...
Crash on Mac when attempting to Join Sessions
UE - Platform - Apple - Nov 17, 2015User reporting crash on his Mac. He seemed to have narrowed down the reproduction to attempting to join a multiplayer session. "After the crashes when I restart UE4 and open my project some BPs are ...