Unreal Engine Issues
Unreal Engine Issues
Instanced static mesh component PerInstanceSMData array defaults do not propagate from the owning Actor CDO to instances on edit.
UE - Gameplay - Blueprint - Nov 19, 2016This occurs because the 'LightmapUVBias' and 'ShadowmapUVBias' struct fields (deprecated) are initialized in UInstancedStaticMeshComponent::SetupNewInstanceData() to nonzero vectors, but as these pr ...
FSkeletalMeshComponentInstanceData subclasses FSceneComponentInstanceData instead of FPrimitiveComponentInstanceData
UE - Anim - Rigging - Mar 19, 2025FSkeletalMeshComponentInstanceData subclasses FSceneComponentInstanceData instead of FPrimitiveComponentInstanceData. When calling ApplyToComponent() the SceneComponentInstanceData version will be c ...
Crash when using both tessellation and virtual texture on a landscape material
UE - LD & Modeling - Terrain - Landscape - Feb 11, 2020When a landscape is set up to use runtime virtual texturing. If it uses a material that writes to a runtime virtual texture and has tessellation enabled. Then we see a crash and the log reports: ...
[CrashReport] UE4Editor_DestructibleMeshEditor!UDestructibleChunkParamsProxy::PostEditChangeProperty() [destructiblechunkparamsproxy.cpp:18]
UE - Simulation - Physics - Destruction - Sep 14, 2017This is a somewhat common crash occurring for users in 4.17 User Descriptionsdeleted something Source Context 7 UDestructibleChunkParamsProxy::UDestructibleChunkParamsProxy(const FObjectI ...
Recent Projects Missing Moved Projects After Browsing
UE - Editor - Workflow Systems - Nov 15, 2022When an existing project is opened from a location where it hasn't been created on that machine, the Editor is unable to parse the project's location properly and fails to show it in the Project Bro ...
Cannot create Editor Toolbar Button with the name "Button"
Tools - Apr 19, 2017The plugin fails to be created with the name "Button". The name button or BUTTON works as a plugin name. If there are some names that plugins cannot be called, then an error/warning message in the o ...
[UDN - 16673100] Calling FComponentVisualizer::NotifyPropertyModified() on a FInstancedStruct property loses all data inside because the PreviewActor spawns with default properties in the FInstancedStruct
UE - Editor - Workflow Systems - Jan 15, 2025We found a problem with the component visualizer system and the PreviewActor in the Blueprint editor. If your component is using a FInstancedStruct in anyway, either directly, in a TMap, or TArray, ...
Crash when double-clicking landscape editor splines point tangent
UE - Graphics Tools - Terrain - Landscape - Apr 11, 2023When double click splines point tangent, the editor will crash. This issue related to [Link Removed], it didn't care about double-click case. Workaround: void FEditorViewportClient::ProcessDoubl ...
[Feature Request] Improve FExtensibilityManager to afford better specialization of context types
Tools - Oct 11, 2016Currently FExtensibilityManager assumes that all extensibility is going to operate on TArray<UObject*>. Moving forward, we want to be able to supply custom, domain-specific context information to e ...
ARKit GetCurrentFrame crashes app
UE - Platform - XR - Aug 22, 2018Using "GetCurrentFrame" crashes app. "The crash is due to the default constructor of FAppleARKitFrame being called by the above mentioned blueprint function. That constructor fails to initialize fi ...