SSGI AO not visible in Lit Viewmode

UE - Graphics Features - Dec 16, 2019

No screen space AO in lit viewmode with SSGI Confirmed in 4.25 MAIN @ CL 10730208 (but you must move camera after activiating SSGI for scene to update) ...

DistanceFieldBentNormalAO does not appear to work with imposter UVs

UE - Graphics Features - Aug 26, 2021

I have not entirely ruled out any issues with the imposter material in the repro, there's a chance this is related to the normal rotations, but turning off distancefields entirely does fix the issue ...

Incorrect mesh offset behavior when playing a forward start after following "Adapting Lyra animation to your UE5 game"

UE - Anim - Gameplay - Oct 13, 2022

See the answer in the UDN: [Link Removed] We may want to update the blog post with a suggested fix, or wait until the automatic root offset tech is production ready. ...

GPU particles disabled on Quest

UE - Niagara - Feb 9, 2024

GPU particles were disabled on Quest 1 due to a compute issue. We need to validate / fix issues for Quest 2 / Quest 3. Reported in [Link Removed] ...

In Path tracer, the Sun disk in the Twinmotion Dynamic sky does not produce the Bloom, Lens flare and Lens dirt effects.

TM - Rendering - Mar 15, 2024

Note that it works when using the old sun intensity (25) instead of the 100,000 value. Also, reducing the scattering in the sky will bring back the bloom. ...

Poor Vulkan RHIThread performance in Development builds on some Android

UE - Platform - Mobile - Dec 10, 2024

Community-attempted workaround received in [Link Removed] Correct fix submitted to 5.6 FNMain in [Link Removed] which needs integrating into 5.5.3. ...

Launch on to HTML5 fails in browser with Expression (mp_Table) failed in LowLevelMemoryMap.h

UE - Platform - Mobile - Jun 16, 2017

I was able to repro this on both FF and Chrome. I have the latest FF 64-bit and was running into this after I deleted my intermediates, ran GenerateProjectFiles.bat, and built UE4 in VS. ...

Android ETC2 Debug Builds Crash on Startup

UE - Platform - Mobile - Sep 9, 2020

Android apps build with the debug configuration on ETC2 will crash on launch. ...

FBX exported from editor imports to Blender at 25fps

Tools - Jan 6, 2017

FBX exported from editor imports to Blender at 25fps. Maya and Max do not appear to take their frame rate from the fbx itself, but set by the scene itself. ...

Cannot Preview a Node in a UI Material

UE - Rendering Architecture - Materials - Mar 18, 2016

Previewing a Node in a UI Material will not show anything, or will remain showing what is placed in Final Color. This issue appears to be fixed in Dev-Main as of CL-2914624. ...