Unreal Engine Issues

Foliage white/background colour artefacts when in front of sky/atmosphere

Ambient cubemap lighting is chunking and pixelized

I notice in 4.27 there's a change looks like where the issue is from " * Cubemaps generated from .hdr long-lat sources were being strongly blurred in cases when mipmaps were enabled. This happened ...

UI Textures should stream

Will help mitigate memory consumption on certain UI elements. ...

Ray traced GI denoiser blotches/artefacts

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

>1ms increase in frame time with showflag.translucency , despite minimal translucency in the scene

Licensee reports this change, and can confirm a very rough similarity observed in a template project in 4.27: [Image Removed] ...

[Voice Virtualization][Focus] - Looping sounds do not become Virtual when Virtualization is Restart and Volume Attenuation is set to 0 by Focus settings

When using Voice Virtualization settings, if the Attenuation Volume becomes 0.0 do to Focus setting, Restart does not behave as expected on looping sounds. Both Disabled and Play when Silent do wo ...

OpenXR Thumbstick Up/Down/Left/Right Input Actions do not fire

OpenXR Thumbstick Up/Down/Left/Right Input Actions do not seem to fire.  I tested on Quest 2, but it sounds like the problem may be all of OpenXR. ...

Strange Artifact under SingleLayerWater with dynamic directional light and LightPropagationVolumes

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, the issue was reproduced. Regression - No [Image Removed] ...

Cloth Rendering - Optimizations cause a one frame geometry stretch when off screen cloth is teleported back on screen.

Render optimizations are causing the cloth render data to be updated one frame too late after an off screen cloth object has been teleported back on screen. The optimisation triggers itself after a ...

Android Vulkan Preview is black when Play in VR