Unreal Engine Issues
Unreal Engine Issues
Reset Instance Changes to Blueprint Defaults does not reregister components
UE - Framework - Blueprint Editor - Jan 17, 2024For map placed blueprint actors with components with property modifications, when triggering Reset Instance Changes to Blueprint Default from the actor instance's Details panel, any components with ...
Interchange Runtime .glb Import Crash When Packaged
UE - Editor - Content Pipeline - glTF - Jun 10, 2025The runtime import process works fine in editor, but fatal error when trying to do so with packaged build of project. My function that calls ImportAsset():bool UMeshLoader::RequestMeshLoad(FString ...
Mass Agent Component implementation triggers Aggressive Default Reference Replacement ensure
UE - AI - Mass - Nov 13, 2023Workaround: Construct the DefaultSubobject with ... = CreateDefaultSubobject<UMassAgentComponent>(TEXT("MASS"), true); The issue appears to be that the DefaultSubobject holds a pointer to the CDO ...
Starting 2 editors with remote control plugin enabled will impact performance
UE - Virtual Production - IO - RemoteControl - Dec 16, 2024Launching a second editor with the websocket server enabled will try to bind to the same address as the first editor, and since the websocket server is running in the game thread, it will block the ...
Static Mesh Scene Actor Flipped Normals
UE - Rendering Architecture - Aug 31, 2023Static meshes can have normals flipped when the actor they are attached to has one component of its scale inverted. ...
Skeletal Mesh motion vector are output only for the last sample of Spatial Sample Count
UE - Virtual Production - Tools - MRQ - Jan 24, 2025Skeletal Mesh motion vectors are output only for the last sample of Spatial Sample Count, while Static Mesh motion vectors are output in all samples. UDN: [Link Removed] Slack thread: [Link Remo ...
Crash can happen in FDetailLayoutBuilderImpl::Tick() when a category of UStruct member includes the "|" symbol and member is Tickable.
UE - Editor - Workflow Systems - Dec 3, 2024A crash can occur when a member of a UStruct has a category with the "|" symbol and is trying to be displayed inside by the FDetailLayoutBuilderImpl class. This happens when there is a UStruct memb ...
Anisotropy of material looks different when set via a scalar parameter node connected to the material node
UE - Rendering Architecture - Materials - Apr 15, 2025The Anisotropy of a material looks different when set on the material output node vs when set via a scalar parameter node connected to the material node ...
Blending does not work when materials using material layers are set to Post Process Volume
UE - Rendering Architecture - Materials - Dec 14, 2022Blending does not work as intended when Material Layers are used in post process. ...
Components added in Blueprint that want initialisation are not maintained by RerunConstructionScripts
UE - Framework - Blueprint - Feb 14, 2024When a native component that wants initialisation is added to a Blueprint actor in the Blueprint editor, the initialisation state of this component will not be correctly preserved by RerunConstructi ...