[Sound Cue][Open World] - Crash when creating a Sound cue from an Ambient Sound actor on an Open World map

UE - World Creation - Worldbuilding Tools - OFPA - Apr 18, 2022

When trying to recreate an issue that resulted in [Link Removed], I came across this call stack.   Regression testing done in //UE4/Release-4.27.2 CL-18427296 and this issue did NOT happen. ...

Crash on FDeferredShadingSceneRenderer & FTranslucentPrimSet with Dynamic Directional and Lit Translucent FX

UE - Graphics Features - Nov 11, 2015

User reporting crash with a specific setup using Lit Translucent FX Clouds and a Day-Night Setup running on a Timeline from Level Blueprint. [Link Removed] 4.8 BUGG: [Link Removed] 4.9 BUGG: [Li ...

Dynamic Materials created on level actors through binding actor to sequencer causes missing asset in multiuser and crash in editor

UE - Anim - Sequencer - Apr 1, 2024

[2024.02.24-00.44.16:412][ 0]LogOutputDevice: Error: === Handled ensure: === [2024.02.24-00.44.16:412][ 0]LogOutputDevice: Error: [2024.02.24-00.44.16:412][ 0]LogOutputDevice: Error: Ensure condit ...

[CrashReport] UE4Editor_Engine!FMaterial::GetShader() [materialshared.cpp:1790]

UE - Graphics Features - Jun 12, 2018

No user comments in crash group 1785 int BreakPoint = 0; 1786 1787 // Assert with detailed information if the shader wasn't found for rendering. 1788 // This is usua ...

FTabManager::FindPotentiallyClosedTab Crash Due to Invalid Array Indexing

UE - Editor - Workflow Systems - May 25, 2023

As you can see from the above callstack it appears that calling RestoreArea can call FindPotentiallyClosedTab again higher in the stack, which can Remove() an entry from CollapsedDockAreas- this cau ...

Niagara Uniform Ranged for integers maximum is exclusive but should be inclusive

UE - Niagara - Dec 17, 2019

Uniform Ranged for integers maximum is exclusive but should be inclusive or at least say otherwise ...

Editor crash when Use Dynamic Material Instance is set to "True" on landscape

UE - LD & Modeling - Terrain - Landscape - Mar 23, 2018

Setting "Use Dynamic Material Instance" to true in the landscape details will cause the editor to crash. Reproduced in 4.19.0 CL 3944462 and 4.20 Main. This feature is not available in 4.18.3. ...

Doing a Rebuild in Visual Studio fails to compile

UE - Foundation - Cpp Tools - UnrealBuildTool - Apr 19, 2016

Attempting to use the Rebuild option in Visual Studio will fail to build the project. It instead produces a message that "Epic was unexpected". ...

OnComponentWake Event does not trigger when the physical body is awoken by a Force

UE - Simulation - Physics - Feb 27, 2025

OnComponentWake Event does not trigger when the physical body is awoken by a Force. The steps described on Steps To Reproduce is enough to replicate this behavior. The OnComponentWake event is only ...

Cannot continuously change Bone Name in SkeletalMesh Sampling Settings

UE - Anim - Jun 14, 2024

An access violation occurs in FNiagaraSkeletalMeshRegionBoneFilterDetails::HandleBoneNameComboBoxSelectionChanged() due to StringItem is nullptr. SkeletalMeshRegionCustomization.cpp void FNiagaraS ...