Crash: Unhandled exception UE4Editor_Renderer!FMobileBasePassMeshProcessor::Process

UE - Graphics Features - Mar 14, 2019

HUD can cause a crash when used with Mobile. "When running from visual studio exception happens here: https://github.com/EpicGames/UnrealEngine/blob/4.22/Engine/Source/Runtime/Renderer/Private/Mobi ...

Adding a call to the parent function when executing an inherited multicast event on a client results in the events being called on the client twice

UE - Gameplay - Blueprint - Apr 2, 2019

A user has reported that adding a Parent call to an inherited multicast function causes the event to be called twice if it is executed on a client. Regression?: No This occurred in 4.20 Link to te ...

Crash when loading iCloud/CloudKit SaveGame on iOS

UE - Platform - Mobile - Jun 5, 2019

"...it seems the crash occurs because it is trying to load an empty (0 byte) save file. Stepping through the code in Engine/Plugins/Online/IOS/OnlineSubsystemIOS/Source/Private/OnlineUserCloudInterf ...

Instanced Static Meshes Incorrect Normals when Scaled Non-Uniformly

UE - World Creation - Worldbuilding Tools - Foliage - Apr 2, 2015

When comparing the World Normals of an Instanced Static Mesh being scaled non-uniformly to that of a regular Static Mesh, their normals do not match one another. I have attempted to look over the d ...

Replicated variables defined in Actor Component blueprints do not actually replicate

UE - Networking - May 1, 2015

Replicated properties defined in an actor component blueprint are not being replicated because UActorComponent::GetLifetimeReplicatedProps isn't adding the blueprint properties to the OutLifetimePro ...

Packaging a plugin for iOS fails when using remote build from a Windows PC

UE - Platform - Mobile - May 31, 2017

Packaging a plugin for iOS fails when using remote build from a Windows PC. This may be related to [Link Removed]. ...

Editor becomes unresponsive when Playing Editor with 3 or more players when an Oculus is hooked up

UE - Platform - XR - Jan 4, 2018

The editor appears to freeze when PIE is set to run with 3 or more players and an Oculus is hooked up to the machine. As a note this issue occurs the second time that PIE is used. ...

Incorrect Skysphere Material Reflection with Ray Tracing

UE - Graphics Features - Lumen - Mar 5, 2019

The reflected Sky material looks blurry and low res when set to unlit, however setting the material to Default Lit has the correct reflection. Even though the reflection is correct the lighting brea ...

Optimization Viewmodes are not visible when Android Preview is enabled

UE - Platform - Mobile - Apr 11, 2019

A user has reported that the Optimization Viewmodes menu does not appear with any options when the Preview Rendering Level is set to Android ES2 or ES3.1. Regression?: Yes This did not occur in 4.2 ...

GetAllMobileRelevantLayerNames drops those layers which are only connected to RuntimeVirtualTextureOutput Node

UE - Graphics Features - May 6, 2021

in UMaterial::GetAllReferencedExpressions, the mobile branch ignores every CustomOutputExpressions including RuntimeVirtualTextureOutput. ...