CMake include path for generated Sources differs from actual generated Sources location

UE - Platform - Linux - Sep 4, 2018

The CMake project generated by UnrealBuildTool does not specify the (correct) directory for files generated for game classes. This happens when generating the CMake files from within the editor usin ...

FTransform(ENoInit) ensures in Debug on mobile platforms

UE - Foundation - Core - Sep 25, 2018

As of 4.20, ENABLE_NAN_DIAGNOSTIC is now enabled in all Debug configurations. However, this does not work well with the TransformNonVectorized that is used on platforms like android. If this combina ...

Nearest Filtering on Vulkan doesn't work on some kinds of Android Devices

UE - Platform - Mobile - Feb 21, 2019

The licensee reported "Nearest" filtering on Vulkan doesn't work on some kinds of Android devices.[Link Removed] I was able to repro this issue on Pixel3 but wasn't able to repro it on Xperia X Per ...

DirectX Tesselation Crash

UE - Graphics Features - Dec 12, 2017

Per UDN Licensee: I have 2 crash repro when enabling DirectX12, both linked to tesselation and still present in 4.18 stock engine and easy to reproduce. Crash 1 -Start editor with DirectX12 -Cre ...

Creating a new user defined struct with the same name as a native declared struct crashes the editor (e.g., "MyStruct" which already exists for some reason)

UE - Gameplay - Blueprint Editor - Mar 31, 2020

Error message:Fatal error: [File:G:/UE4/Projekte/4.25/Engine/Source/Runtime/CoreUObject/Private/UObject/Class.cpp] [Line: 2503] Couldn't bind to native struct STRUCT_REINST_MyStruct_0. Headers nee ...

Soft object reference variables have their default value greyed out

UE - Gameplay - Blueprint - Mar 2, 2021

When creating Soft Object Variables of Actor or Character blueprints, the default value of the variable is greyed out and unable to be changed. I was able to create a Soft Object Reference of the Th ...

Enabling Window Animations causes drop down menus to flicker and be displaced

UE - Editor - UI Systems - Slate - Mar 10, 2021

I tested this with 3 Nvidia Drivers to see if I could find a driver that works properly. I tested the following Game Ready drivers Version 457.30, 461.40 and the latest, 461.72. The flicker occurred ...

Crash when adding a Material Layer with a MaterialFunctionCall node to a Material Instance

UE - Graphics Features - Mar 30, 2021

Adding a Material Layer to a Material Instance that has a Material Function Call node connected to the Set Material Attributes node causes the editor to crash. I tested a Material Layer without the ...

Crash when adding a pawn that has a SetSenseEnabled node set to true on Begin Play and then playing the game

UE - AI - Apr 20, 2021

When adding the SetSenseEnabled node to a Pawn and controlling another pawn that has an AIPerceptionStiumuliSource, the editor crashes. I tested using other senses such as Hearing and the crash occu ...

Play Dynamic Force Feedback does not work on Android

UE - Platform - Mobile - Sep 16, 2021

When trying to trigger vibration through the Play Dynamic Force Feedback node, nothing happens on Android. I tested this on Windows as well with an Xbox Series X controller connected, and the vibrat ...