Lumen screen traces from hair cast noising moving shadows on faces

UE - Graphics Features - Lumen - May 17, 2024

There is moving blotchy noise on the head and face from hair when Lumen HZB tracing hits hair.  CL 33258050 fixes the noise in the hair, but tracing still hits hair when it starts from surfaces like ...

Foot Placement tries to step on vertical surfaces

UE - Anim - Gameplay - Oct 31, 2023

From a community member: Are you responsible also for the FootPlacement node? Its fantastic, but there is a possible bug with the walkable surface handling. It tries to step even on vertical surfac ...

Some materials render black on Iphone 6 series phones

UE - Platform - Mobile - Oct 6, 2016

Some materials are not rendering on iphone 6 series devices. They will render completely black on one device but not others in the same series. Replacing the material with a basic material renders o ...

Many native-only interfaces incorrectly appear as implementable by blueprints

UE - Gameplay - Blueprint - Sep 14, 2020

Right now, any UINTERFACE that is not marked as CannotImplementInterfaceInBlueprint is shown as implementable in blueprint. If these functions have BlueprintCallable functions or related things then ...

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self (4.8)

UE - Gameplay - Blueprint - Jan 20, 2015

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self. Without one, the BP fails to compile with the following error: "Error Variable node Get NewVa ...

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self

UE - Gameplay - Blueprint - Jan 9, 2015

Get and Set nodes for variables from a BP's parent class will not compile without a reference to Self. Without one, the BP fails to compile with the following error: "Error Variable node Get NewVa ...

Regression: FAnimInstanceProxy memory leak when BeginDestroy() called on UAnimInstance before USkeletalMeshComponent

UE - Anim - Runtime - Feb 10, 2025

In UE 5.5, the fix applied by CL 36529858 in ue5-main updated USkeletalMeshComponent::ClearAnimScriptInstance() to call AnimScriptInstance::UninitializeAnimation() on the animation instance. This, i ...

Instigator is no longer automatically set when spawning actors from blueprint

UE - Gameplay - Blueprint - Aug 20, 2024

Actors that are spawned from blueprints will no longer have their instigator automatically set to the instigator that spawned them. This is a regression in 5.5, because in 5.4 and earlier a null Ins ...

Enabling ZenLoader causes editor crash when undoing Level Instance deletion

UE - CoreTech - Sep 5, 2024

Crash reported through UDN. With ZenLoader enabled, deleting a level instance and triggering Undo causes a crash in  ULandscapeComponent::PostEditUndo() The user has provided an example project th ...

Unable to scroll in Structure property window

Tools - Nov 16, 2016

When enough variables are added to a structure to cause the list to be too long for the window, a scroll bar should appear and you should be able to scroll through them. This does not occur. Regres ...