Unreal Engine Issues

FAnimInstanceProxy::LODLevel isn't initialized, causing UB in PreUpdate

FAnimInstanceProxy::LODLevel isn't initialized before it is used in PreUpdate, causing UB on the first call. ...

LongPackageNameToFilename: Improve error message

A customer is requesting that the error message for FPackageName::LongPackageNameToFilename get improved. He suggests that we list the valid roots as part of the message. ...

Widgets added via the user created section do not update when changes are made to the child widgets

When updating a widget's settings, those changes will not be reflected in the defaults of any instances where that widget has been used. ...

DevelopmentServerLauncher.exe loops whenever the editor is open even if no iOS devices are connected

A user has reported that DeploymentServerLauncher.exe will continue to poll for devices even if no iOS devices are connected. I am under the impression that this is so that Windows can poll for iOS ...

Adding an LOD while in PIE or Simulate Cauases the Editor to Crash

If you add an LOD while the editor is simulating or playing, the Editor Crashes. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 5660361, 4.23 CL# 6063286 ...

[CrashReport] libUE4Editor-VulkanRHI.so!FVulkanCommandListContext::RHIDrawIndexedPrimitive(FRHIIndexBuffer*, int, unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) [VulkanCommands.cpp:818]

Generated from CrashReporter ...

Materials with a custom node with a Struct that has a function fails to compile for GLSL (Android) and uses a default material

A user has reported that Materials that contain a custom HLSL node that has a Struct with a function declared inside of it results in the material failing to compile for GLSL, causing the Material t ...

CSM receiver culling issue on Mobile

Package Failed with VS2019

Error Log: UATHelper: Packaging (Windows (64-bit)): CSC : warning CS1685: The predefined type 'System.Runtime.CompilerServices.ExtensionAttribute' is defined in multiple assemblies in the global al ...

When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with Stationary Lights

When a Texture Object is used for the "Tex" Input of a Texture Sample node in a material, the material will no longer contribute to indirect lighting when used with static lighting. Working as expe ...