Collapsing a local variable Get/Set node into a new function or macro will result in a BP compile error.

UE - Gameplay - Blueprint - Apr 21, 2017

We currently overlook local variables being collapsed into new function and/or macro graphs, where they are no longer in scope. Current workaround: Manually delete local variable "get" and "set" no ...

Crash when using adaptive virtual texture

UE - Graphics Features - Mar 24, 2021

A check() is being hit intermittently when using adaptive virtual texture. check(Entry.Magic == Handle.Magic) inside FVirtualTextureProducerCollection::GetProducer ...

SpringArmComponent with "Use Camera Lag Substepping" does not handle fluctuating frame rates correctly

UE - Gameplay - Jun 4, 2024

The description of SpringArmComponent's "Use Camera Lag Substepping" option says "sub-step camera damping so that it handles fluctuating frame rates well". However, as noted and explained by a licen ...

UGeometryCollectionComponent::EventDispatcher gets registered for events twice what can result in duplicate collision events being fired

UE - Simulation - Physics - Destruction - Sep 18, 2024

UGeometryCollectionComponent::EventDispatcher gets registered for events twice, once in UGeometryCollectionComponent::RegisterForEvents() and again in UChaosGameplayEventDispatcher::OnRegister(). Th ...

Calling SetupAttachment/AttachToComponent with 'this' as the parent inside a USceneComponent subtype's C++ ctor for nested component subobjects will result in all instances of the nested default subobject trying to attach to the CDO at registration time.

UE - Gameplay - Nov 16, 2016

This occurs because the 'AttachParent' property is a UPROPERTY, and as a result when we create a new instance of a USceneComponent subtype, any USceneComponent subtypes it owns are treated as instan ...

Struct in Object class will not populate if an expose on spawn struct pin is split on "Construct Object from Class" node

UE - Gameplay - Blueprint - Jul 29, 2016

Struct in Object class will not populate if struct pin split on "Construct Object from Class" node. This does not appear to happen to other variable types. Workaround Do not split the struct pin, ...

Switching LOD while using Evaluation Mode = Freeze in custom transit graph fails

UE - Anim - Runtime - Sep 14, 2021

If a user setups up a custom transition graph that caches one of the input poses by setting the Evaluator Mode property to Freeze then the node fails to deal with the situation where the LOD or mesh ...

SetStaticMesh does not replicate

UE - Networking - Jun 2, 2015

Using OnRep_StaticMesh() in code or using the Set Static Mesh node does not replicate across server/client in game. ...

Collision Channel on Particle Systems not saving

UE - Graphics Features - Oct 21, 2014

Setting the Collision Channel to anything other than World Static will reset on closing and restarting the editor. ...

[CrashReport] Assertion due to failing to find shader type

UE - Graphics Features - Apr 26, 2017

This is an early trending crash in the 4.16 Preview. User information has not been provided, but this shares similarities to an old jira [Link Removed]. Source context: 1434 /** Finds the ...