Unreal Engine Issues

IOS crash disabling idle timer when closing the app

Licensee report of crash during shutdown due to setting [UIApplication sharedApplication].idleTimerDisabledbeing from the Game thread. Grouped together with others items in [Link Removed] ...

[CrashReport] UE4Editor_UnrealEd!UEditorEngine::bspBrushCSG() [editorbsp.cpp:1188]

This is an infrequent BSP crash occurring for users in 4.17 User DescriptionsWas getting ready to creat a stic mesh from some brushes, did the align verticies, computer chugged on it a bit then edi ...

[CrashReporter] UE4Editor-AlembicHairTranslatorModule!ParseObject [AlembicHairTranslator.cpp:446]

Generated from CrashReporter Error message: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x60b40008 Comments from Users: I cant import abc hair from Blender 2.81a. crashe ...

Crash occurs when adding code to custom node in Material Function.

A Salesforce ticket reports that entering the above code into a custom node in a Material Function causes a crash. I was able to repro his crash reliably. This is a regression. Working as expected ...

Crash occurs while animating a control rigged actor in sequencer when drag selecting the actor in a orthographic view

This is a regression Tested in 4.27.2 Drag selecting a control rigged actor while in an orthographic view causes the editor to crash. ...

UNetDriver server-side hitch results in ActorInfo->NextUpdateTime far into future

A high UWorld::Tick DeltaSeconds (i.e. GameThread hitch) results in a high UNetDriver::TickFlush DeltaSeconds. This DeltaSeconds can high (many seconds) if the hitch is long. This value then affects ...

[CrashReport] UE4Editor-Engine!FMaterial::GetShader(FMeshMaterialShaderType *,FVertexFactoryType *,int,bool) [MaterialShared.cpp:2054]

Generated from CrashReporter Possible dupe of [Link Removed], however callstack differs significantly Error Message: Fatal error: [File:D:/Build/++UE4+Licensee/Sync/Engine/Source/Runtime/Engine/P ...

Suspend/resume iOS Metal Crash on low end device with MTLCommandBufferErrorMemoryless error with lots of geometry

The project was built in Unreal 4.27.2 binary from the Epic Games Launcher. At this stage we have only observed the crash on devices with a hardware combination of Apple A9 1.8 GHz and 2GB of Memory ...

Crash when importing new mesh and regenerating skeleton for additive animation

Crash due to LAN beacon packet incompatibility in 4.22

We changed the IP address serialization format without bumping the LAN beacon packet version. Should just need to bump it up. ...