Unreal Engine Issues
Unreal Engine Issues
[Debug Tools][Crash] - Enabling au.editor.ForceAudioNonStreaming causes editor to crash the next time the user PIEs
UE - Audio - May 31, 2022Encountered while going through some debug commands. Repro 3/3. Crash Reporter Link: [Link Removed]Assertion failed: ChunkIndex != 0 [File:E:\User\Engine\Source\Runtime\Engine\Private\AudioStreaming ...
Play Media Player Node Causes Blueprint Functions to be Uncallable
UE - Gameplay - Blueprint - Feb 23, 2016This only occurs in standalone or a packaged game Having a Play Media Player node in a blueprint causes all of that blueprint's functions to become uncallable. Found in 4.11 Preview 5. Reproduced ...
[Crashreport] UnrealEditor-Niagara!FNiagaraSubmixListener::UnregisterFromSubmix() [NiagaraDataInterfaceAudio.cpp:85]
UE - Niagara - Oct 20, 2022Generated from CrashReporter Crash only occurs when packaged. ...
Chaos Modular Vehicles Examples desynchronizes easily
UE - Simulation - Gameplay - Feb 27, 2025Chaos Modular Vehicles Examples does not replicate properly and it's easy to reach a state of desynchronization where the state stops being replicated and position/rotation of cars mismatch. As an ...
Spaces in SCS component variable names carry through to the component template object name.
UE - Gameplay - Components - Feb 28, 2018Naming an SCS component variable something like "My Scene" results in a component template UObject named "My Scene_GEN_VARIABLE" (space included). This causes the property editor/details view to fa ...
[CrashReport] UE4Editor_SequenceRecorder!FAnimationRecorder::Record() [animationrecorder.cpp:616]
UE - Anim - Sequencer - Aug 22, 2017According to CrashReporter there is both an Ensure and a Crash that occur with this callstack. The error message for the Ensure is Ensure condition failed: UIDList == AnimationCurves.UIDList [File:D ...
AreaNavModifiers generated by SplineNavModifierComponent have the component-to-world transform incorrectly applied twice
UE - AI - Navigation - Aug 15, 2025USplineNavModifierComponent was made available in UE 5.4. It generates several FAreaNavModifier instances covering a region with a certain thickness around a USplineComponent, and worked correctly u ...
Hot Reload picks up outdated Blueprint Function Library
UE - Gameplay - Blueprint Compiler - Jun 5, 2017Making changes that can potentially alter the CDO or other aspects of a UBlueprintFunctionLibrary can cause BP compilation issues with cryptic messages. This is caused by the Owning Blueprint (i.e. ...
Inaccurate Metal shader warning message in the Editor when CommandLineTools is set to be the default compile tool on Mac
Tools - Nov 13, 2017When CommandLineTools is set as the default tool, an inaccurate warning message is displayed when opening the Editor that states that Xcode is too old to compile Metal shaders, even if the latest ve ...
Orientation is wrong for client in networked HMD game when UseControllerRotationRoll is true
UE - Platform - XR - Feb 20, 2017A networked VR (HMD) game will result in an undesirable rotation for the pawn on startup for a network client, and the issue is dependent on timing. ...