Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_UnrealEd!SCurveEditor::OnObjectPropertyChanged
Tools - Aug 1, 2017This is a common crash that has affected more than 170 users since at least 4.15 and occurring into 4.17. Based on one user description and frequent project names, this appears to commonly correla ...
Python commandlet crashes when spawning actors in a level
UE - Editor - Workflow Systems - May 7, 2019Using the python commandlet to spawn actors within a Map and then saving it causes a crash in the commandline. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 6338849) ...
FNiagaraScalabilityManager incorrectly reactivates a NiagaraComponent that was deactivated by runtime user code
UE - Niagara - Scalability - Oct 1, 2025Context: The Niagara System is the primary tool to do visual effects inside Unreal. Niagara systems can be culled due to distance. Problem: Once a deactivated Niagara System is culled due to distan ...
Startup Movie renders as a black screen on some Android devices
UE - Platform - Mobile - Jun 29, 2018While testing on the 10661_Xiaomi Mi 5C the Startup Movie would occassionally render as a completely black screen while still playing the audio from the Startup Movie sample. This was the most consi ...
Interpolators of Particle Dynamic Parameters Need "nointerpolation".
UE - Niagara - Aug 1, 2019Regardless Niagara or Cascade, dynamic parameters for particles are passed to pixel shaders from vertex shaders via InterpolantsVSToPS. It can cause a precision error on some materials, for example ...
[CrashReport] UE4Editor_UnrealEd!FComponentEditorUtils::DeleteComponents() [componenteditorutils.cpp:539]
UE - Gameplay - Components - Dec 1, 2017This is a common crash in the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 524 OutComponentToSelect = RootComponent; ...
Max Depenetration Velocity cannot be set to zero after setting it to a non-zero value
UE - Simulation - Core - Mar 1, 2021It seems that when setting the Max Depenetration Velocity to a non-zero value, you are then unable to set it back to 0. Tested in //UE4/Release-4.25 @ CL 14469661 and this did not occur so marking ...
[CrashReport] UE4Editor_Engine!FAnimCurveBase::SetCurveTypeFlag() [animcurvetypes.cpp:18]
OLD - Anim - Jun 13, 2016This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Access violation - code c0000005 ( ...
Infinite Loop When Generating HLOD Clusters
UE - World Creation - Worldbuilding Tools - HLOD - Aug 8, 2018The HLOD system gets stuck in a infinite loop when building. Comment from the user: ++I've tracked it down to this code: const AActor* UHLODProxy::FindFirstActor(const ALODActor* LODActor) { a ...
[CrashReport] Couldn't find Shader TShadowDepthVSVertexShadowDepth_OutputDepthPositionOnly
UE - Graphics Features - Sep 7, 2017This is a common crash that has occurred since at least 4.16. The one user comment mentions a plugin, but many of the crashes occur on vanilla builds. User DescriptionsVaTexAltlas plugin enabled i ...