Ray traced GI denoiser blotches/artefacts

UE - Graphics Features - Lumen - Sep 15, 2021

See licensee description of the issue for more info. Issue did not occur in 4.25. ...

QAGame Crashes on launch on iphone 6 (iOS 8)

UE - Platform - Mobile - Jan 16, 2017

this crash was encountered during the mobile compat for 4.15. So far, just this device has been affected. ...

[CrashReport] Assertion failed - FAssetEditorManager::OpenEditorForAsset()

UE - Anim - Sequencer - Jul 20, 2017

This is a common crash affecting users in 4.16. Unfortunately they have not provided any additional information ...

Game start slowing down when there are more than 10 sprites in the level

UE - Gameplay - Paper2D - Apr 10, 2018

Sprites seem to be drastically affecting FPS in 4.19 projects on Mac devices. ...

Normal of Skeletal Mesh is incorrect when Recompute Tangent is used when Skincache is enabled

UE - Graphics Features - Aug 12, 2020

This issue occurs in Skeletal Mesh depending on the model when Skincache is enabled and affects the rendering. ...

Hot reloading newly created C++ project compiles modules

UE - Foundation - Core - Apr 25, 2017

This is a regression from 4.15.2 and occurs on both Windows and Mac. Affects both Binary and Github builds. ...

Copy Pose From Mesh Node Does Not Preview in Sequencer

OLD - Anim - Jun 13, 2018

Copy Pose From Mesh node does not affect the animation when previewing in Sequencer. This works when played in the editor. ...

Console is off screen in VR preview when windows scaling is set to 150% or above

UE - Platform - XR - Jun 29, 2018

Windows scaling appears to affect the HMD if the project is open on a screen with window scaling being used. ...

Significant editor slowdowns when moving blueprinted actors while having a different complex blueprint open

UE - Gameplay - Blueprint Editor - Jun 7, 2021

A Blueprinted actor's construction script time can be affected by the complexity of an opened level Blueprint. ...

Performance regression from 4.10 to 4.11 on Sony Xperia M4 Aqua

UE - Platform - Mobile - May 27, 2016

User reports that on the Sony Xperia M4 the FPS have decreased from about 25 down to 5 after upgrading to 4.11. ...