Material functions should be able to output the same data as it can accept as inputs

UE - Rendering Architecture - Materials - Sep 30, 2024

Material Functions cannot output Texture Objects or Booleans. This seems to be because the Material Editor believes that the outputs are Floats, and forbid connections to inputs that take Textures ...

Uniform Scale has no effect on .fbx's imported with "Transform Vertex to Absolute" unchecked

UE - Editor - Content Pipeline - Import and Export - Oct 25, 2016

Uniform Scale has no effect on .fbx's imported with "Transform Vertex to Absolute" unchecked. NOTE: This was tested with assets from both 3DS Max and Blender. Regression (no) issue (does) occur ...

Root Motion is broken in Additive Animations and causes scale issues

OLD - Anim - Jan 5, 2017

Root Motion is broken in Additive Animations. Also causes scale issues Regression: YES Worked: 3039270 (4.12.5) Broken: 3172292 (4.13.2) ...

Emissive material lighting falloff regression in GPU Lightmass

UE - Graphics Features - Sep 12, 2023

Forum user noted that emissive lighting being built with GPU Lightmass is in fact being built, just not around the mesh, but in a larger radius and with reduced strength compared to 5.1.1. They foun ...

Custom Node using GetPointClampedSampler causes Crash

UE - Graphics Features - Nov 8, 2016

A licensee is getting a crash when using the GetPointClampedSampler within a Custom Node. Regression? No, this crash occurs in 4.12.5, 4.13.2, and the 4.14 preview 3 release. ...

Construction script does not properly find location of socket if parameter changed in details pane

UE - Gameplay - Blueprint - Oct 20, 2016

Construction script does not properly find location of socket if parameter changed in details pane. If the actor is moved in the viewport, it prints as expected. Regression (yes) issue (does not) ...

Disabling "Apply Fogging" Doesn't Work for Translucent Material with Volumetric Fog

UE - Graphics Features - Jul 6, 2018

Translucent materials with "Apply fogging" disabled will be affected by volumetric fog.  Found in 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, and 4.21 ...

[CrashReport] Mac crash - UE4Editor-Slate.dylib!PrepassWindowAndChildren(TSharedRef<SWindow, (ESPMode)0>)

UE - Platform - Apple - Oct 27, 2017

This Mac crash originally occurred in 4.15 around March 2017, then decreased in frequency during 4.16 and 4.17. It may be starting to trend again in 4.18. There is one record of this occurring in 4 ...

Framerate drops significantly when attempting to import heightmaps

UE - LD & Modeling - Terrain - Landscape - Sep 30, 2016

Framerate drops significantly when attempting to import heightmaps. Once the heightmap is imported this error is no longer prevalent, but during the preview there is a ~80-100 FPS drop. Regression ...

Changes made to a sublevel in a persistent level do not transfer to the primary sublevel .umap

Tools - Oct 21, 2016

Changes made to a sublevel in a persistent level do not transfer to the primary sublevel .umap, however changes made to the .umap appear when it is loaded as a sublevel. Regression (yes) issue (do ...