Niagara color picker user parameter preview no longer updates until confirmation

UE - Niagara - Content - Apr 18, 2025

Starting with UE 5.4, the Color Picker Tool no longer updates preview values in real time for certain editor windows like Niagara when working with User Parameters. This behavior is a regression fr ...

[UDN 18615482] SPropertyMenuComponentPicker crashes depending on clipboard contents

UE - Editor - Workflow Systems - Apr 17, 2025

[Link Removed] From UDN: "The component picker has a Paste option and when trying to decide if it should be enabled or not it attempts to load a class using the clipboard contents as a class name. ...

Map placed actor binding to another actor's Event Dispatcher (multicast delegate) results in duplicate bindings after blueprint recompile

UE - Framework - Blueprint - Apr 17, 2025

Context Blueprint actors placed on the map can bind to another actor's event. If an ActorB has a reference to ActorA, it can bind to an event dispatcher in A by creating an event node in ActorB's e ...

Sampling regions don't get created when creating a mesh.

UE - Anim - Mutable - Apr 17, 2025

I'm trying to use VFX in specific regions on a character and would normally use sampling regions to do it easily, however the mutable mesh that is generated doesn't seem to be creating any of the on ...

Dataprep crash

UE - Editor - Content Pipeline - Visual Dataprep - Apr 16, 2025

This question was created in reference to: [Link Removed] Last post fixed the import crash, but it seems it added another. If we hit Execute button twice in a row by mistake we get a crash with th ...

Bake Transform not working properly in DataPrep

UE - Editor - Content Pipeline - Visual Dataprep - Apr 16, 2025

When I use my dataprep recipe I'm seeing something strange. The Bake Transform node seems to be stripping the transform instead of applying it. I have this in dataprep: https://udn.unrealengine.c ...

Anisotropy of material looks different when set via a scalar parameter node connected to the material node

UE - Graphics Tools - Texturing Tools - Apr 15, 2025

The Anisotropy of a material looks different when set on the material output node vs when set via a scalar parameter node connected to the material node ...

Inconsistent parameter handling for pak/iostore block size / patch padding

UE - CoreTech - IoStore - Apr 14, 2025

Users have trouble overriding the blocksize/patchpaddingalign parameters for UnrealPak from UAT commandlines.There is no easy way to specify these parameters through a buildcookrun, instead they n ...