Incorrect Input Index When Removing The Input From Custom Node

UE - Rendering Architecture - Materials - Aug 27, 2018

The input removed the connection points are not re-indexed. So connected 'wires' stay on their places. That causing disconnection of the last wire as well as shift for every node that followed the o ...

Incorrect Material Element Indexes When Importing Multiple Meshes In The Same FBX

Tools - Aug 28, 2018

Incorrect material element indexes when importing multiple meshes in the same FBX. If you re-import the mesh that has the incorrect material element index it will correct itself. Seems similar to [ ...

RotateVector Function Not Properly Rotating SkysphereTexture

UE - Graphics Features - Aug 31, 2018

RotateAroundAxis Inside the RotateVector expects a normalized vector as rotation axis input, and that vector is not normalized. Once normalized it seems to work normally. Unable to test in 4.19 due ...

GPU Particles Don't Spawn at Correct Location When Used as Collision Event Receiver

UE - Niagara - Oct 8, 2018

GPU emitter doesn't spawn particles at expected location when it is an event receiver. Also disabling Interpolate Spawning in the emitter properties affect this behavior as well, making the particle ...

Progress Percent is removed from UMG Progress Bar when Transform Shear value is changed

UE - Graphics Features - Nov 8, 2018

Modifying the Shear values on a Progress Bar in a Widget Blueprint cause it to lose its Fill Color and set Progress. This is a regression from 4.20.3 (CL-4369336). Reproes with -vulkan on both Linux ...

Converting an Actor to spawnable/possessable in Sequencer makes it lose its position in the Track Panel.

UE - Anim - Sequencer - Nov 15, 2018

Converting an Actor to spawnable/possessable in a Sequence causes it lose its position in the track panel. If the Actor was in a folder it will need to be added back to that folder. This was report ...

Building UE4 solution fails in Test configuration

UE - Foundation - Core - Nov 15, 2018

Attempting to build the full UE4 solution for the Test configuration fails in 4.21. Most projects will build successfully, but a few will fail with various errors. Most of the errors appear to be re ...

Slight menu lag when using Vulkan on Linux

UE - Platform - Linux - Dec 12, 2018

When using the UE4 Editor with Vulkan there is a slight lag when navigating through the menu options. This lag is not present when launching with OpenGL nor is it present on Windows with -vulkan.  ...

Static Lights with IES Profiles Will Bake an Incorrect Lightmap

UE - Graphics Features - Jan 3, 2019

When using an IES profile with a static light, the lightmap that gets baked will lose all detail of the IES profile. Example project attached. This doesn't occur in 4.19 CL# 4033788 Found in 4.20 ...

Crash When Material is Set to Deferred Decal with Emissive Decal Blend Mode and Forward Shading Enabled

UE - Graphics Features - Jan 25, 2019

When Forward Shading is enabled, if you create a material with their properties setup with the following:   Material Domain: Deferred Decal - Blend Mode: Translucent - Decal Blend Mode: Emissive T ...