Crash when using ConstructorHelpers on Niagara assets

UE - Niagara - Apr 10, 2019

When using the ConstructorHelpers templated function, FObjectFinder, with Niagara assets, the editor crashes. Tested in 4.21.2 (CL - 4753647), 4.22 (CL  - 5660361),  4.23 (CL - 5806860) ...

HISM Component not Rendering in Packaged Game using Shipping Configuration

UE - World Creation - Worldbuilding Tools - Foliage - May 7, 2019

HISM Component not rendering in a packaged game using Shipping configuration.  Working as expected in 4.21 CL# 4753647 Found in 4.22 CL# 6063286 and 4.23 CL# 6317373 ...

Ensure When Adding Nodes to Material Graph in Forward Shading

UE - Graphics Features - May 15, 2019

Ensure occurs when adding a Constant3Vector to the Material Graph in Forward Shading. Works as expected in 4.21 CL# 4753647 Found in 4.22 CL# 6063286 and 4.23 CL# 6395561 ...

Niagara Sub UV Index ignored

UE - Niagara - May 16, 2019

Using the Particles.SubImageIndex has no effect on what portions of the a UV are rendered in Niagara. Tested in 4.21.2 (CL - 4753647), 4.22.1 (CL - 6063286), 4.23 (CL - 6533064) ...

Spline Mesh regression on older iOS phone

UE - Platform - Mobile - Jun 10, 2019

Regression with rendering Spline Mesh Components seen on older (5s) iOS device. I did not reproduce a crash with an iPadPro A1701 or an Android Note 4 Confirmed in 4.23 MAIN at CL 6910902 ...

Disabling fog in Unlit mode does not work

UE - Graphics Features - Jun 11, 2019

The Show Flags for Fog no longer function correctly when in Unlit mode. Tested in 4.21.2 (CL - 4753647), 4.22.2 (CL - 6574378), 4.23 (CL - 6925347) ...

Crash When Building HLODs

UE - World Creation - Worldbuilding Tools - HLOD - Aug 21, 2019

Building HLODs causes a crash. This only seems to occur in some levels as shown in the attached project. Found in 4.22 CL# 7053642, 4.23 CL# 7948402, 4.24 CL# 8124506 ...

CAD Geometry translation error

UE - Editor - Content Pipeline - Datasmith - Importer - Sep 6, 2019

Importing the CAD file into Datasmith causes huge surfaces to appear on the model that do not appear in the CAD software. This was reported and tested in 4.22 (4.22E2). This was reproduced in 4.23 ...

Viewport breaks with Forward Shading, MSAA and Accurate Velocities from Vertex Deformation Enabled

UE - Graphics Features - Sep 13, 2019

With Forward Shading, MSAA and Accurate Velocities from Vertex Deformation enabled  the viewport breaks. If any of these settings are different, the viewport is fine again. Found in 4.23 CL# 838658 ...

Dynamic navmesh update causes navlinks to reset to their default state

UE - AI - Dec 16, 2019

Updates to dynamic navmesh cause navlinks to reset to their default state. Navigation still shows the path as accessible even though it isn't. This is a regression from 4.23.1 (CL-9631420) where th ...