Unreal Engine Issues
Unreal Engine Issues
Opening / Compiling class with ChildActorComponent causes the ChildActor package to be marked dirty.
UE - Gameplay - Components - Mar 24, 2017Looks like this is a problem where the Actor is Duplicated due to constructions scripts running. Later, when the duplicate is destroyed all of its components will call RemoveOwnedComponent as they'r ...
Mirror Data Table is NOT added SyncMarker automatically when creating
UE - Anim - Runtime - Oct 27, 2022Mirror Data Table is added rows about Bone, Curve, Notify when creating. But SyncMarker is ignored. The following codes can fix this issue. Engine/Source/Runtime/Engine/Private/Animation/MirrorDa ...
[CrashReport] UE4Editor-Renderer!FMaterialShader::GetShaderBindings(FScene const *,ERHIFeatureLevel::Type,FMaterialRenderProxy const &,FMaterial const &,FMeshDrawSingleShaderBindings &) [ShaderBaseClasses.cpp:379]
UE - Graphics Features - May 31, 2019Generated from CrashReporter ...
Creating an AnimStreamable asset immediately crashes the editor
UE - Anim - Runtime - Feb 6, 2024When creating an anim streamable we immediately fail a check in the compression code in FCompressibleAnimData::FetchData: checkf(AnimSequence, TEXT("Invalid animation sequence while trying to fetc ...
[CrashReport] Assertion failed: !Export.ClassIndex.IsNull() | UPackage::Save()
UE - Foundation - Core - Cooker - Sep 20, 2017This is a somewhat common crash coming out of the 4.17 release. User Descriptionsclicked Launch->Firefox. This is the same project with in-game video-screens which has been crashing on Launch for W ...
InlineEditConditionToggle behavior present for UProperties even when InlineEditConditionToggle property specifier is not used
UE - Editor - Workflow Systems - Jun 6, 2024Reported by customer: It seems like in some cases, even when the InlineEditConditionToggle property specifier is not used, the behavior it enables is turned on anyway. It's possible to disable it w ...
PCG: Unable to use Attribute property overrides to target nested struct properties, such as BodyInstance.CollisionProfileName due to how it's validated in PCGMeshSelectorByAttribute.cpp
UE - World Creation - Procedural Tools - PCG Workflow - Jun 17, 2025Context: Static Mesh Spawner is used to spawn one static mesh per point in the provided point data. PCGMeshSelectorByAttribute is used to select an entry based on an attribute present on the mesh. ...
[CrashReport] UE4Editor_Core!FStatsThreadState::ScanForAdvance() [statsdata.cpp:732]
UE - Foundation - Core - Aug 10, 2017This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: Item.NameAndInfo ...
Setting color in linear color struct variable within another struct crashes the editor
UE - Gameplay - Blueprint - Jun 16, 2016Setting color in linear color struct variable within another struct crashes the editor. Frequency: 4/4 Regression (yes) issue (does not) occur in 4.11.2 ...
Creating a Blueprintable Struct that contains a Tmap results in Editor Crash
Tools - Sep 6, 2019Any blueprint with a TArray of a struct containing a TMap crashes the editor when adding elements ...