Unreal Engine Issues
Unreal Engine Issues
Alembic Import with empty first frame will cause the editor to crash
UE - Gameplay - Aug 10, 2016The editor will crash when importing an Alembic file with an empty first frame. ...
Contact shadows bug in splitscreen
UE - Graphics Features - Dec 11, 2024Screen Space shadows do not check the view boundary. This can cause extra shadows in split screen, as one view can cast shadows in another view. ...
Crash when calling UPoseableMeshComponent::CopyPoseFromSkeletalComponent() from Actor's Tick while unregistering
UE - Anim - Runtime - Apr 26, 2023Under certain conditions, it appears that the function UPoseableMeshComponent::CopyPoseFromSkeletalComponent may crash because the BoneSpaceTransforms obtained from the source component are empty, p ...
Infrequent WaitingTask->IsCompleted crash related to FNiagaraSubmixListener closing QAGame -game
UE - Audio - Submixes - Jan 5, 2022Infrequent WaitingTask->IsCompleted crash related to FNiagaraSubmixListener closing QAGame -game Unsure if related to [Link Removed] it was spawned from a group of oodle crashes and this is distinc ...
Editor Crashes when importing some FBXs with multiple Material IDs in 4.14.2
UE - Editor - Content Pipeline - Import and Export - Jan 5, 2017This is a regression in behavior between 4.14.1 and 4.14.2! The editor will crash when importing FBX meshes that have multiple material ID assignments. If it's a single material ID it will import w ...
Possible bug with GAOGlobalDistanceFieldCacheMostlyStaticSeparately
UE - Graphics Features - Jun 2, 2025The Global Distance Field can constantly update, even when the camera is stationary, in large World Partition maps. This bug requires a large amount of the World Partition map to be loaded to reprod ...
GAS: Initial OnRep_SpawnedAttributes from DefaultStartingData clears attribute values for already replicated ActiveGameplayEffects
UE - Gameplay - Gameplay Ability System - Oct 23, 2024Context The property 'DefaultStartingData' in AbilitySystemComponent can be configured from blueprint to spawn default attribute sets. This happens OnRegister. For runtime spawned actors like pawns ...
Ensure occurs when RBAN simulated rigid body approaches UseComplexAsSimple mesh
UE - Simulation - Physics - Character - Jun 30, 2022When a collision enabled RBAN node attempts to collect surrounding meshes, if there is a mesh with UseComplexAsSimple, it will hit the Ensure when cloning a mesh on the task graph thread. Disabling ...
Editor can crash while performing a Hot Reload after a custom UClass class is added to the project
UE - Foundation - Cpp Tools - Hot Reload - Mar 14, 2019Performing a Hot Reload after creating a custom UClass class can result in a crash. This was reported on Linux, but reproduced on Windows. Additional testing will be done on Linux to confirm the is ...
Using ConstructorHelpers::FClassFinder in a GameMode constructor may result in a default value or crash if the level is reloaded multiple times.
UE - Gameplay - Oct 27, 2015Randomly selecting a character class from the GameMode constructor using ConstructorHelpers::FClassFinder can result in default or null character being set when the level is reloaded. It appears tha ...