Unreal Engine Issues
Unreal Engine Issues
Linear interpolation occurs on constant tangent curve partially
UE - Anim - Runtime - Feb 17, 2025When using UV scrolling for a flipbook-like animation in Animation Sequence, creating keys with "Constant Tangent" settings on Curve Editor does not result in an instantaneous change to the specifie ...
Line Attractor Strength Varies By Frame Rate
UE - Niagara - Aug 20, 2015The Line Attractor node seems to render differently (have different strengths) between Cascade Viewport, Editor Level Viewport, PIE and Standalone/Launched Game In trying to capture movies for this ...
Custom Events with duplicate input names will not compile
UE - Gameplay - Blueprint - Jan 12, 2015Custom Events with duplicate input names will not compile. This does not occur immediately: creating two Custom Events with two identically named inputs will not cause a compile error, but if you re ...
Modifying FSuggestProjectileVelocityParameters::ResponseParam.CollisionResponse modifies FCollisionResponseParams::DefaultResponseParam
UE - Gameplay - Sep 17, 2024FSuggestProjectileVelocityParameters was introduced in 5.4 and has a FCollisionResponseParams member that's initialized as a mutable reference to FCollisionResponseParams::DefaultResponseParam. str ...
UE 5.4 - Specular/reflection disappears above 4096 resolution render
UE - Rendering Architecture - Aug 1, 2024After a viewport is more than 4096 pixels wide, Lumen's specular reflections buffer cuts its width off at 4096 pixels. It appears that the affected buffer is "Lumen.Reflections.ResolvedSpecularIndi ...
FCollisionProfileNameCustomization doesn't support Multiple Values
UE - Editor - Applied Usability - Aug 16, 2023The class FcollisionProfileNameCustomization customizes the property editor for the class FcollisionProfileName. However, it does not handle the case where multiple assets/actors are being edited si ...
Particles: SetFloatParameter not always having an effect
UE - Graphics Features - Oct 7, 2015A licensee is trying to use Distribution Float Particle Parameters for the Noise properties of a Beam Particle. When trying to change these parameters in a Blueprint, some work, others don't. When ...
[Datasmith] [Sketchup] Material maps wrong when using colors or applying materials directly to grouped object
UE - Editor - Content Pipeline - Datasmith - Exporters - Sep 30, 2019The problem occurs when a material gets added to a group inside sketchup directly instead of individual faces before grouping. The materials that are just colors are doing the same thing. This was ...
Gameplay Effects can hold stale references to GameplayTags when switching Gameplay Effect Component type
UE - Gameplay - Gameplay Ability System - Jan 9, 2024Gameplay Effects can hold stale references to Gameplay Tags when the adding component is switched for a different type. The tags are serialised, and their presence can be confirmed with Reference Vi ...
Matinee doesn't display animated SkeletalMesh if its origin is out of view
UE - Anim - Sequencer - Jan 23, 2015From 8/17/16 Tools sync: This is probably also happening in Sequencer. Think Sequencer should just auto-set this flag. ----------------------------------- If a SkeletalMesh actor is placed beyond v ...