BoneMap thread safety crash

UE - Graphics Features - Aug 9, 2016

Crash occurs in FGPUBaseSkinVertexFactory::FShaderDataType::UpdateBoneData() on RenderThread2 at the following line: check(NumBones <= MaxGPUSkinBones); The problem seems to be a race condition ...

Precomputed lighting is not saved when using Save As or Duplicate for levels

UE - Graphics Features - Sep 30, 2016

Lighting is invalidated with levels that have been duplicated or Saved As. The maps that are created are immediately marked dirty and need to be resaved vs how they were in 4.12.5 where they wouldn' ...

Copying a destructible mesh in the viewport loses reference to assigned mesh in the details panel

UE - Simulation - Physics - Destruction - Nov 4, 2014

BRANCH: MAIN CHANGELIST: 2346079 PLATFORM: Windows DESCRIPTION: When copying a Destructible mesh in the viewport the Destructible Mesh component will not be shown for the copied mesh. The mesh can ...

Morph Targets flicker Randomly in Slave Mesh

OLD - Anim - Oct 1, 2015

When a mesh is slave to a master mesh, its morph targets will flicker when Played in Editor. This does not occure with the same assets in 4.8. This has been reported by at least two different use ...

32bit TGA Texture With Alpha Has Noticeable Artifacts On RGB Channels (DXT5)

UE - Graphics Features - Feb 17, 2017

When using a 32bit tga with an alpha channel that has hard edges the compression method (DXT5) will create artifacts in the RGB channels that normally aren't there whit DXT1 compression(no alpha). ...

FBatchedElements::Draw - OrthoZoomFactor can be reset to 1.0f if Line.bScreenSpace is ever false

UE - Graphics Features - Feb 20, 2017

A licensee has reported that the Draw function in BatchedElements.cpp can set the OrthoZoomFactor (not a local variable) to 1.0f if Line.bScreenSpace is ever found to be false. The line this can oc ...

Unable to Save or Close Editor after Copying .FBX to Content Folder via Project Directory

Tools - Jul 5, 2017

The editor is not allowing users to save or close a project after an .FBX file has been copied to the project's Content directory and allowing the Content Browser to discover the change in source fi ...

Event dispatchers does not correctly compile with variable that is the same BP

UE - Gameplay - Blueprint - Nov 28, 2017

There is an issue occurring where Event dispatcher with inputs doesn't compile if they have a variable that is the same as the BP class. This issue only occurs with the variable being the same class ...

Sound Wave Actions Menu Closes Automatically When Changed to Columns View

Tools - Dec 15, 2017

After changing the view to columns (by going through Right click < Create Dialogue < View Options < Columns) the Sound Wave Action menu will close out automatically before any options can be selecte ...

Fog Does Not Behave As Expected in Splitscreen

UE - Graphics Features - May 25, 2018

This bug seems to repro very inconsistently for me, but I've seen it affect Atmospheric Fog and Exponential Height Fog, and reproduced in 4.18.3, 4.19.2, and Main CL 4093338. I've attached Config fi ...