4k monitor support with touch and mouse does not work

Tools - Mar 20, 2018

Mouse and touch support seems to become unresponsive when the editor is running on a 4K panel. Certain play modes will allow click events to work while others do not when running on a 3840x2160 disp ...

Returning a const pointer from a UFUNCTION causes a VS compile error

UE - Foundation - Cpp Tools - UnrealHeaderTool - Oct 4, 2017

Attempting to return a const pointer from a UFUNCTION will cause a VS compile error The syntax UFUNCTION(BlueprintCallable, Category = test) const UMyActorComp* SomeFunc(); returns a VS compile ...

UStaticMeshComponent.PreviousLODLevel always returns 0

UE - Rendering - Aug 30, 2017

The UStaticMeshComponent.PreviousLODLevel variable always returns 0 no matter what the last LOD actually was. Regression?: No This also occurred in 4.16 ...

[CrashReport] UE4Editor_Engine!FViewMatrices::FViewMatrices()

UE - Rendering - Aug 3, 2017

This is a trending crash in the 4.17 previews. Unfortunately users have not provided any descriptions of their actions when the crash occurred. Source Context 464 FViewMatrices::FViewMatric ...

Hierarchical instanced static mesh LOD is not consistent between eyes

UE - Platform - XR - Apr 7, 2017

User reports that the issue fixed for ODIN-6308 still occurs for InstancedStaticMeshes. ...

ALight::Destroyed() doesn't call Super::Destroyed()

UE - Gameplay - Feb 25, 2016

A licensee mentioned that If you see ALight::Destroyed() in Engine\Source\Runtime\Engine\Private\Light.cpp, you can see Super::Destroyed() is't called in the function. ...

Custom Node plugged into World Displacement cannot convert from FMaterialTessellationParameter to FMaterialPixelParameter

UE - Rendering - Nov 30, 2015

Custom Nodes plugged into World Displacement are yielding:Error [SM5] error X3017: 'CustomExpression1': cannot implicitly convert from 'struct FMaterialTessellationParameters' to 'struct FMaterialP ...

Instanced object properties get cleared when compiling some (all?) types of Blueprints (Actor components and user widgets at least)

UE - Gameplay - Components - Oct 7, 2015

If an ActorComponent contains a UObject property of a type that is DefaultToInstanced, any time a Blueprint of a class containing that ActorComponent is compiled the UObject value is reset to None. ...