UBX Collision Rotation Is Set Incorrectly on FBX Import

UE - Editor - Content Pipeline - Import and Export - Dec 4, 2018

Imported FBXs that use UBX will import their collision rotation incorrectly. You can see this when scaling the collision non-uniformly.  Found in 4.20 CL# 4369336, 4.21 CL# 4541578, and 4.22 CL# 46 ...

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 ...

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 ...

Ray Traced Ambient Occlusion Uses Resources Even if AO Intensity is 0

UE - Graphics Features - Lumen - Aug 22, 2019

Ray traced Ambient Occlusion is still active even when Ambient Occlusion Intensity is set to 0 in the Post Process Volume. Found in 4.22 CL# 7053642, 4.23 CL# 8115738, 4.24 CL# 8124506 ...

Attachment rules in Level Sequencer are broken

UE - Anim - Sequencer - Oct 2, 2019

The Attach track attachment rules seems to have no effect when selecting "Snap to Target" and playing the sequence. This was reported and tested in 4.23 (CL-8386587). This was reproduced in 4.22.3 ...

Searching Global Illumination inside the details section of a post process volume does not return any results.

Tools - Nov 20, 2019

Searching "Global" in the details panel of a post process volume does not provide Global Illumination as a result, but searching "GI" does. Tested In: 4.22.3 CL#7053642, 4.24 P3 CL#10283392 , 4.25 ...

Show collision command turns on lights that have 'Visibility' set to false

UE - Graphics Features - Dec 2, 2019

Running the console command "Show Collision" when lights are placed in the scene with "Visibility" off results in the lights turning back on. Tested in: 4.22.3 CL#7053642 , 4.24.P4 CL#10387632, 4 ...

AudioMixer has private include in public header

UE - Audio - Dec 4, 2019

It is possible to receive a compilation error when including a public header (AudioMixerDevice.h) because it includes a private header (AudioMixerSourceManager.h)  Tested In :  4.22.3 CL#7053642  ...