Unresponsive black screen in standalone when enabling HMD w/ Oculus attached

UE - Platform - XR - Oct 8, 2015

Going fullscreen/stereo on/enableHMD causes a play in standalone to go unresponsive and render as a black screen. Found on: Binary 4.9.2 release (from launcher/portal) UDN: https://udn.unrealengin ...

Set Morph Target not being sent to children of Inherited Mesh

OLD - Anim - Sep 4, 2015

In previous versions of UE4, Set Morph target to call the Inherited Mesh and would result in any children of the Inherited Mesh that shared that morph target name to morph. In UE4.9 this no longer ...

NavLinkProxy potentially causing extra Character Movement

UE - AI - Feb 12, 2020

The user is using a Nav Mesh Bounds Volume and a Nav Link Proxy. They are calling AI Move To to navigate to the point, but the Character reproduces extra movement and goes a bit past it. For debuggi ...

Materials with Subsurface Profile not affected by Opacity value

UE - Graphics Features - Oct 24, 2017

A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...

[AI] Warning for invalid bounds on ANavLinkProxy

UE - AI - Navigation - Feb 18, 2025

Using ANavLinkProxy's smart link but removing all of the simple links results in warnings in the logs for invalid bounds. The smart link is not set to be enabled until after the navigation element i ...

Packaging plugin doesn't create UE4Editor.modules file

UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 17, 2016

Seems like packaging plugins doesn't generate UE4Editor.modules files. This file is used to point to the plugin binaries to use, and so can cause issues. The simple workaround for this is just copy ...

FBX Import into Level node rotation

UE - Editor - Content Pipeline - Import and Export - Aug 9, 2016

User has pointed out that generating FBX files through C++ causes the level nodes and a light node. I'm not fully versed with this, so the notes from the user may be more helpful for their descript ...

FMultiReaderSingleWriterGT isn't thread safe

UE - Foundation - Core - May 17, 2016

From https://udn.unrealengine.com/questions/292741/fmultireadersinglewritergt-isnt-thread-safe.html: I've found that FMultiReaderSingleWriterGT has at least 2 bugs: The one that caused a deadlock ...

[Interchange][FBX] Fail to import attributes animation curves with key values as integer

UE - Editor - Content Pipeline - Import and Export - Jan 13, 2025

cf[-https://forums.unrealengine.com/t/5-5-not-able-to-import-animation-curves-since-5-3-5-5/2267442/4-] Be carefull there is 2 bugs reported on that Forum and I think they are not related. The firs ...

Cannot connect to SVN on OSX even after setting up keychain

UE - Platform - Apple - Feb 9, 2015

From this AnswerHub: https://answers.unrealengine.com/questions/169750/bug-cannot-login-to-source-control-in-os-x-editor.html Reading through all the information that is given (really useful for a ...