FCustomPrimitiveDataCustomization::SetVectorColor is closing the colorpicker and only updating the first channel

UE - Graphics Features - Aug 23, 2023

When it updates the red channel, the Simple Construction Script (SCS) gets re-run (via AActor::RerunConstructionScripts) on the Blueprint Actor instance generating new instances of all its component ...

Illegal reference to private object when cooking a child level sequence with a time warp track

UE - Anim - Sequencer - Apr 28, 2025

Slack: [Link Removed] Another Slack: [Link Removed] Cook error:UATHelper: Cooking (Windows): LogSavePackage: Warning: UATHelper: Cooking (Windows): Referencers of MovieSceneTimeWarpSection /Gam ...

AActor::CheckActorComponents has misleading warning

UE - Gameplay - Components - Apr 24, 2023

There's actually two issues going on here: 1. The REINST references are incorrect, and due to [Link Removed]. 2. Blueprint created components will always have different names between the instance ...

Spline Mesh Component created from KML file doesn't render in PIE after spline point change

Tools - Oct 8, 2015

Spline Mesh Component created from KML file doesn't render in PIE after spline point change I cannot get this to occur outside of the users test project. He is pulling data from a KML file, creatin ...

Custom Primitive Data are not (fully) functional with Instanced Static Mesh components

UE - Graphics Features - Mar 29, 2022

If the ISM component is not in a blueprint, but added directly inside the level, the CPD works. If the CPD value is set from a construction script through either the Default or Transient function, i ...

Set world or relative rotation on a child component sets the wrong rotation

UE - Gameplay - Blueprint - Aug 21, 2018

Unexpected results from setting relative rotation on child of child in BP. Also confirmed in Main CL 4302610 "I have found that changing this code from RelativeRotationCache . RotatorToQuat (NewRe ...

LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created

OLD - Anim - Aug 8, 2017

LOD Build Scale set higher than 1 will cause a merged actor to increase to that scale when created. It seems to be using the LOD Build Scale to double in size on actor merge. This is a regression: ...

GetOverlappingActors/Components ignore physics actors spawned in with zero movement

OLD - Anim - May 15, 2017

GetOverlappingActors/Components ignore physics actors spawned in with zero movement. This only effects actors where the root is the DefaultSceneRoot and not the Static Mesh Component. User Descript ...

Regression: Selected Virtual Production Roles are saved but not loaded from Saved/Config/WindowsEditor/UserVPRoles.ini, unless file DefaultUserVPRoles.ini exists (even if completely empty)

UE - Virtual Production - Tools - Mar 7, 2025

When the "Virtual Production Utilities" plugin is enabled, the Editor makes available a list of "Virtual Production Roles", which can be created and individually selected in a "VP Roles" dropdown on ...

Sequencer: No preview animation shown without an animation track

UE - Anim - Sequencer - Apr 2, 2019

From User: "Sequencer: When using an animBP there's no animation at all (preview) without an animation in the animation track. Strangely enough the animation BP starts running if you add any animat ...