MotionWarping does not recognize new MontageInstance with the same montage

UE - Anim - Gameplay - Jan 11, 2023

When the same AnimMonotage is played again while moving with MotionWarping & RootMotion, UAnimNotifyState_MotionWarping does not recognize it. From licensee: The issue was that in URootMotionMod ...

[CrashReport] Mac Crash - UE4Editor-Engine.dylib!LoadPhysXModules(bool)::$_0::operator()()

UE - Platform - Apple - Aug 15, 2017

This is a trending Mac crash coming out of the 4.17.0 release. It appears to occur before users are able to open their project. I have not found any records of this crash occurring on Windows. Use ...

UAssetManager::ChangeBundleStateForPrimaryAssets: Performance: Avoid canceling loads in progress when new bundles added and the in progress bundles are kept

UE - Foundation - Data Pipeline - Cooker - Mar 4, 2024

UAssetManager::ChangeBundleStateForPrimaryAssets allows adding new BundleNames to the list of BundleNames loaded for a PrimaryAssetId. Each BundleName specifies a BundleEntry with a list of assets. ...

Package fails for android if company name begins with a number

UE - Platform - Mobile - Apr 26, 2017

If the company name has a number at the beginning of it when packaging for android it returns a series of errors and does not allow the project to be built. The error that is being shown in the outp ...

[CrashReport] ULevel::GetWorldSettings - UMaterialFunctionThumbnailRenderer::Draw

Tools - Oct 30, 2017

This is a common crash that has occurred since at least 4.16. The callstack is nearly identical to [Link Removed], which appears to be fixed in 4.18; and [Link Removed], which has not. The differen ...

Unknown force is applied to the cloth when changing the skeletal mesh LoD with cloth.

UE - Simulation - Physics - Character - Jul 11, 2019

There are 3 issuesEach particles don't restore its previous position. Which is for calculating velocity by verlet iteration.The previous transform is cleared by current transform. It provides zero v ...

tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out

UE - Platform - Mobile - Jan 22, 2019

When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...

MovieRender Pipeline Skips Output Frames during GC

UE - Anim - Sequencer - Jun 8, 2020

This is being seen in the wild... can release a temporary fix until 4.26 when we can change the headers and fix it for real. ...

[CrashReport] UEdGraphSchema_K2::PinHasSplittableStructType

UE - Gameplay - Blueprint - Sep 14, 2017

This crash is affecting a few users in 4.17. ...

Crash exiting play in VR with -DX12

UE - Platform - XR - Oct 17, 2017

Crash when exiting play in vr when the editor has been launched with -DX12 This is not a regression (at least from 4.17.2), as in 4.17 the editor would crash simply when attempting to play in VR. ...