Landscape Grass Type will not build with static lighting leaving 'Lighting needs to be rebuilt warning.'

UE - World Creation - Worldbuilding Tools - Foliage - Sep 3, 2015

When using the Landscape Grass Type and using a Static or Stationary light will throw the 'Lighting needs to be rebuilt' warning. ...

Lightmaps not carrying over with 'Save Current As'

UE - Graphics Features - Lumen - Jul 17, 2020

I can reproduce it, other developers reported to me too.  Not a problem in 4.22 ...

Volumetric fog black and not updating with real-time capture skylight

UE - Rendering - Architecture - Oct 20, 2023

It looks like the skylight is not updating the CPU side SH values when Real Time Capture is enabled, and thus old/empty values are sent to the fog. ...

Crash occurs running SunTemple on Nexus 6p in Vulkan mode

UE - Platform - Mobile - Jan 14, 2017

Testing Vulkan DLS and hit this crash when running the app on Nexus 6p. This crash does not reproduce on Nexus5_4012_Adreno 330 ...

Vertex Animation anti-aliasing improvement

UE - Graphics Features - Jun 2, 2015

A licensee has reported that their vertex animations are leaving a lot of be desired with anti-aliasing. Specifically using vertex animated meshes can leave aliasing remnants behind while it's shift ...

Dismissing "Place phone into daydream headset" leaves app at black screen

UE - Platform - XR - Jun 29, 2017

Currently experiencing an issue when re-entering Google Daydream game after exiting the Daydream setup (place your phone in headset) screen by pressing the x in the top left corner of the screen. Wh ...

Geometry Collection (GC) fragments are affecting the Navmesh in wrong positions

UE - Runtime - Deformable - Dec 6, 2024

Geometry Collection (GC) fragments are affecting the Navmesh in wrong positions and the identified cause is wrong indexing. Once a GC breaks, it's fragments, when big enough, are creating islands in ...

MDL imported from Substance Source with Datasmith causes a crash

UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019

MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...

inherited gameplay tags no longer work

UE - Gameplay - Jul 3, 2020

Added and Removed tags are cleared in inherited gameplay tag containers. This came from the following UDN: https://udn.unrealengine.com/questions/587982/ue-master-tags-in-finheritedtagcontainer-do-n ...

HoloLens auto-enabling as a supported platform in 5.1

UE - Platform - XR - Mar 30, 2023

https://udn.unrealengine.com/s/case/5004z00001n9MUWAA2/hololens-cannot-be-permanently-disabled-as-a-target-platform?fromCase=1 They disable hololens as a supported target platform, but it is enab ...