Unreal Engine Issues
Unreal Engine Issues
[AI] UE_MT_SCOPED_READ_ACCESS(NavElementAccessDetector) Fails in editor on fresh sync
UE - AI - Navigation - Jan 27, 2025Licensees have reported failed multi-thread access code for NavElementAccessDetector in complex levels that have not finished compilation of their static meshes. The eventual failed check is inside ...
Cannot continuously change Bone Name in SkeletalMesh Sampling Settings
UE - Anim - Jun 14, 2024An access violation occurs in FNiagaraSkeletalMeshRegionBoneFilterDetails::HandleBoneNameComboBoxSelectionChanged() due to StringItem is nullptr. SkeletalMeshRegionCustomization.cpp void FNiagaraS ...
Fail to launch ('Attempt to build nav collision') on device when HLOD is generated
UE - AI - Feb 16, 2017After generating HLOD, game launched from launch on device does not run correctly. 4.14 does not seem to have this issue, so this might be a regression. ...
Subobject delimiter replacement in ResolveName can cause previously valid strings to exceed NAME_SIZE
UE - CoreTech - UObject - Nov 8, 2021ResolveName will replace the subobject delimiter (colon) with two periods. This increases the length of the string, and can cause asserts due to the string exceeding NAME_SIZE even when the name was ...
Nullptr dereference in FHeadMountedDisplay::UpdateSplashScreen()
UE - Platform - XR - Apr 5, 2017A customer has had problems running a game with a splash screen when passing -game flag to the editor. UpdateSpashScreen will call GetCurrentFrame, which can return a nullptr but fails to verify it ...
Memory spikes when changing properties on a large amount of textures via Property Matrix
Tools - Jan 29, 2015When changing a property on a large number of textures via the Property Matrix, memory usage can spike to over 26G. Tested in Main (Promotable-CL-2423505) Probably related to [Link Removed] ...
[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. ...
[CrashReport] UnrealEditor-Engine!UStaticMeshComponent::BuildTextureStreamingDataImpl
UE - World Creation - Worldbuilding Tools - Feb 28, 2022Generated from CrashReporter ...
Assert running Datasmith from Blutility via a Commandlet
UE - Editor - Content Pipeline - Datasmith - Importer - Aug 6, 2018Launching the Editor/Datasmith from Blutility via a Commandlet that is importing a .stp file causes the Editor to not launch with an assert. ...
Loading CVAR preset does not apply the parameters to other nodes in multi-user until manually toggled on/off
UE - Virtual Production - Tools - CVAR Tool - Apr 13, 2023Loading a CVAR preset does not apply the parameters in the preset to other nodes in multi-user. These parameter values must be toggled On/Off manually after loading to apply correctly. ...