Corruption in rotating decal in TM-ShaderModels on iPhone 8 and X's

UE - Platform - Mobile - Oct 9, 2017

This particular decal is animated and has a Translucent decal blend mode This occurs on both iPhone 8 and 8 Plus (11.0.2) It does not occur on: iPhone SE, iOS 11 beta1 iPhone 7 Plus, iOS 10.3.2 ...

Static Mesh LOD Generation Produces Bad Shading and Holes in Mesh

UE - Graphics Features - Feb 19, 2019

Auto generated LODs create a mesh with holes and geometry that creates incorrect shading. Working as expected in 4.21 CL# 4753647 Found in 4.22 Preview 2 CL# 5035897 and 4.23 CL# 5064136 This is ...

Crash When Adding a Second Vector Parameter to Material Parameter Collection

UE - Graphics Features - Feb 21, 2019

The Editor will crash if you add more than one vector parameter to a Material Parameter Collection.  This works as expected in 4.21 CL# 4753647 Found in 4.22 Preview 2 CL# 5035897 and 4.23 CL# 506 ...

Disabling DBuffer Decals causes Decals not to render

UE - Graphics Features - Mar 8, 2019

Disabling the Decal DBuffer in the  Project Settings>Rendering causes the Decals to not render on geometry that overlap their respective Decal Actor. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...

Niagara GPU Emitter Flickering at Certain Angles When the System Origin is Occluded

UE - Niagara - Mar 25, 2019

Niagara GPU Particle Flickering at Certain Angles When the System Origin is Occluded. Found in 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 Preview 6 CL# 5439949, and 4.23 CL# 5533539 ...

Landscape Grass No Longer Casts a Shadow with "Use Landscape Lightmap" Enabled

UE - LD & Modeling - Terrain - Landscape - Apr 8, 2019

Landscape Grass No Longer Casts a Shadow with "Use Landscape Lightmap" Enabled. Working as expected in 4.20 CL# 4369336 and 4.21 CL# 4753647 Found in 4.22 CL# 5660361 and 4.23 CL# 5779284 ...

Planar Reflections Falling Back to Baked Probes at Certain Angles

UE - Graphics Features - Apr 18, 2019

Planar Reflections Falling Back to Baked Probes at Certain Angles. Found in 4.21 CL# 4753647,  4.22 CL# 5660361, 4.23 CL# 5974510 Working as expected in 4.20 CL# 4369336 This is a regression ...

High-Poly Meshes with DistanceToNearestSurface is Completely White

UE - Graphics Features - May 14, 2019

The distance field materials do not work on a High Poly mesh.   Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4753647, 4.22 CL# 6063286, 4.23 CL# 6398642 ...

Vive - Motion Controller Component - Temporal AA Regression

UE - Platform - XR - May 22, 2019

In 4.22, temporal AA rendering artifacts can be seen on MotionControllerComponent attachments. Other AA methods look to be working without artifacts. Not seen with Oculus Workaround: Set "Disa ...

Force Feedback is weaker on Linux when compared to Windows

UE - Platform - Linux - Jun 4, 2019

Force Feedback Effects vibrate weaker on Linux when compared to Windows in the same test project. This was reported and tested on 4.22.2 (CL-6574378). This was reproduced on 4.21.2 (CL-4753647) and ...