Duplicating / Moving (to another level) an actor with a Hierarchical Instanced Static Mesh component causes a crash

UE - Graphics Features - Nov 14, 2016

When you have an actor with a Hierarchical Instanced Static Mesh component that has a Static Mesh set and is populated with at least 1 instance and then duplicate it or move it to another level, it ...

[CrashReport] UE4Editor_HeadMountedDisplay!FDefaultSpectatorScreenController::Helpers::GetEyeCroppedToFitRect() [defaultspectatorscreencontroller.cpp:363]

UE - Platform - XR - Nov 10, 2017

This is a trending crash coming out of the 4.18 release. It has also been experienced internally by QA. User DescriptionsUEQA-Juliet Talcott - minimizing Source Context 352 // Eye rect is t ...

Crash after setting a key on a Rotation Track, then trying to right click the key with Transform track collapsed

UE - Anim - Sequencer - Aug 3, 2016

Error message: Access violation - code c0000005 (first/second chance not available) Source Context: 336 337 if (bHasRotationKeys) 338 { 339 TSharedRef<FStru ...

On Hit Events are inconsistent/inaccurate when using Substepping most notably at lower frames per a second

UE - Simulation - Physics - Dec 9, 2021

This is a regression Tested in: //UE4/Release-4.27 CL18319896 Binary //UE5/Release-5.0-EarlyAccess CL16682836 Binary Under the same conditions in UE4 the On Hit events fire accurately and as expect ...

[CrashReport] UE4Editor_MeshPaint!FMeshPaintGeometryAdapterForStaticMeshes::OnRemoved() [meshpaintstaticmeshadapter.cpp:222]

Tools - Nov 21, 2017

This is an infrequent crash in the 4.18 release. Users have not provided any description of their actions when the crash occurred. Source Context 210 if (StaticMeshReferencers) 211 ...

[CrashReport] Linux crash - FVulkanDynamicRHI::Init()

UE - Platform - Linux - Aug 16, 2017

This is a trending Linux crash in 4.17.0 that has also occurred in 4.16 Callstack from LogLogLinux: Error: appError called: Assertion failed: Assertion failed: [File:/home/---/UnrealEngine/Engine/ ...

UMG widget callbacks do not set PIE context in editor

UE - Editor - UI Systems - May 21, 2018

This is from a UDN post. Several gameplay functions, such as level streaming and SoftObjectPtr resolution, depend on the GPlayInEditorID being set when that code is executed in PIE in the editor. T ...

[CrashReport] UE4Editor_CoreUObject!FScriptArrayHelper::EmptyAndAddUninitializedValues() [unrealtype.h:2703]

UE - Gameplay - Blueprint Compiler - Aug 15, 2017

This is a trending crash coming out of the 4.17.0 release. Based on user descriptions, this crash occurs on Play or Compile for affected users. User DescriptionsAgain crashing when I hit playIF I C ...

[CrashReport] UE4Editor_MeshPaint!FBaseMeshPaintGeometryAdapter::GetVertexPosition() [basemeshpaintgeometryadapter.cpp:70]

UE - Simulation - Physics - Character - Nov 2, 2017

This is a trending crash coming out of 4.18, and may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 57 const TArray<FVec ...

Find Collision UV Returning Unexpected Values

UE - Gameplay - Jan 19, 2017

Find Collision UV is returning values that are above 1.0, when it is expected that these values would remain between 0 and 1. ...