Actor components in blueprintable structs are uneditable in full BP editor, but not on instanced actors or in data BP editor

UE - Gameplay - Blueprint Editor - Jan 24, 2024

When an actor has a blueprintable struct that contains a reference to an actor component and that component is created default in the actor's constructor, the struct and the component will be unedit ...

Gameplay Tag Query on Actor Component cannot be editted normally on instances

UE - Gameplay - Gameplay Ability System - May 23, 2024

A GameplayTagQuery in an ActorComponent cannot be properly edited on instances of an actor with said component. There is a workaround, but the issue makes editing Tag Queries rather annoying, doubl ...

Duplicated TextureLoadVirtualPageTable in GetCustomData functions in generated HLSL add to the total instruction count due to TextureLoad having side effects

UE - Rendering Architecture - Materials - Dec 4, 2024

When using materials with CustomData inputs, such as the Eye material with Iris Distance and Mask, Virtual Texture samples will increase the instruction count for each unique VTPageResult. Each cus ...

Using both an Atmospheric and Exponential Height Fog will cause an issue rendering Translucency-based Materials

UE - Graphics Features - Jul 10, 2014

Using both an Atmospheric and Exponential Height Fog will cause an issue rendering Translucency-based Materials.  (See Screenshots below) IMPACT:                   Cannot use both Atmospheric Fog ...

CapsuleComponent with CCD on will push and pull any simulated physics objects when close but not in contact with the capsule

UE - Gameplay - Jul 21, 2015

When using a capsule component for the character with CCD enabled there can be a force that pulls or pushes simulated meshes that are never touched by the capsule. Demonstration video attached. As ...

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

UE - Graphics Features - 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 ...

Compiler error on indirect blueprint component references when change is made to actorcomponent

UE - Gameplay - Components - Jul 10, 2015

When blueprints associated with the actorcomponent are open and changes are made to the actorcomponent, once it's compiled there are compiler errors on the indirect blueprints. ...

Physic Constraint movement is quadratic where previously it was spherical

UE - Simulation - Physics - Apr 6, 2022

Physic Constraint movement is quadratic where previously it was spherical. ...

Gameplay Ability Component Montage Replication incorrectly handles cyclic animation sections

UE - Gameplay - Gameplay Ability System - Dec 4, 2023

In AbilitySystemComponent_Abilities.cpp, the check for the client being on a different section on line 3059 checks that the RepNextSectionID is not the current section. One would assume this is beca ...

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP

UE - Foundation - Cpp Tools - UnrealBuildTool - Nov 18, 2016

Blueprint Library plugin set to 'Runtime' doesn't work in Standalone/packaged builds if used inside of the 1st Person Character BP. User Description: Blueprint libraries are still broken in the fi ...