Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_CoreUObject!UStruct::IsChildOf() [class.h:373]
UE - Gameplay - Jan 24, 2018Comments from users:I pressed Play while having a directional light selected in-editorChanged landscape collision mip level. ...
Niagara crash when duplicating an emitter in the timeline through right-click menu
UE - Niagara - Dec 11, 2019Trying to duplicate an emitter from the timeline crashes the editor. This looks to be the result of UMovieSceneNiagaraEmitterTrack not implementing the function SupportsType. ...
Mutable - morph does not work for a skinned mesh with more than one uv channel
UE - Anim - Mutable - Oct 16, 2025The morph functionality fails to change when the skinned mesh contains more than one UV channel in a Customizable Object. ...
Rotating terrain with heightmap causes black splotches on terrain
UE - LD & Modeling - Terrain - Landscape - Jan 26, 2015Rotating a landscape with a heightmap causes lightmass to break, rendering black splotches across terrain after building lighting. ...
Crash in the Blueprint Debugger.
UE - Gameplay - Blueprint - Nov 21, 2017After creating a few different Blueprints in the editor and adding a breakpoint to a Function, a crash ensues when using Step In to debug the Blueprint. ...
Deltagen Importer - Materials still import if disabled
UE - Editor - Content Pipeline - Datasmith - Importer - Dec 6, 2018Materials still import if disabled in Deltagen Fbx Importer. Import Geometry bool also looks to not be functioning. ...
Packaged project crash on open with GEngine & ConstructorHelpers
UE - Foundation - Core - UObject - Jun 28, 2017When GEngine is used in a constructor before calling a ConstructorHelper function, the packaged game will crash on open with an assertion about recursion (see screenshot) ...
Arrays on multicast events called from the server are not passed to clients
UE - Networking - Jul 19, 2018Arrays that are passed into a Multicast Event as an input are not available on clients who call the function Regression?: Yes This did not occur in 4.19.2 ...
Mesh Decals don't work with HISM of non-nanite meshes
UE - Rendering Architecture - Aug 10, 2021The HISM on the right has 4 instances light the ISM on the left, but only one instance works with the mesh decal material. [Image Removed] ...
A non moving looping camera sequence flickers.
UE - Anim - Sequencer - Dec 20, 2024There is a small flicker on a looping single camera sequence where the camera doesn't move. Because the camera is static, you would not expect to see a flicker in lighting conditions. ...