Two sections can be created when MovieScene3DAttachTrack is added from Sequence Scripting

UE - Anim - Sequencer - Oct 17, 2019

If you add a track for Attach from Sequencer Scripting and add a section to it, two sections are automatically added.If you don't use Sequencer Scripting, only one section will be added ...

Get Tracking State does not change in ARCore

UE - Platform - XR - Oct 17, 2019

On android, there is no way to detect when an image is not tracked by the camera anymore. Once the image is tracked, the tracking status of the image is always "tracking". According to GoogleARCore ...

Simple collision Landscape returns incorrect physical material

UE - LD & Modeling - Terrain - Landscape - Oct 16, 2019

When a landscape uses simple collision, the returned physical material can be mismatched. This seems to be a result of ConvertHeightfieldDataForPhysx within ULandscapeHeightfieldCollisionComponent: ...

Curves in compressed additive animations interpolate incorrectly when two keys in a row have the same value

OLD - Anim - Oct 16, 2019

Curves compressed from additive animations will not interpolate correctly if they have two keys in a row with the same value. The second key will be ignored, leading to the curve interpolating earli ...

Tool tip grammer error for "Force Layout Prepass" node

UE - Editor - UI Systems - Oct 16, 2019

Grammatical error in a tool tip for the Force layout prepass node. It appears that he word "is" needs to be removed (see attached image) ...

Instance Materials are not Created When Importing an FBX

UE - Graphics Features - Oct 16, 2019

Instance Materials are not Created When Importing an FBX.  Found in 4.22 CL# 7053642, 4.23 CL# 8386587, 4.24 CL# 9551884, 4.25 CL# 9615021 ...

Shader Complexity viewmode does not work on masked materials

UE - Graphics Features - Oct 16, 2019

In engine versions 4.23 and above, the Shader Complexity Viewmode doesn't render appropriately for meshes with masked materials. Tested in 4.22.3 (CL - 7043647), 4.23 (CL - 8386587), 4.24 (CL - 961 ...

Landscape LOD tessellation is broken in 4.24

UE - LD & Modeling - Terrain - Landscape - Oct 16, 2019

Landscape LOD tessellation creates big holes in landscapes. ...

The Rotate Around Point Niagara module does not account for current particle position

UE - Niagara - Oct 16, 2019

The rotate around point module no longer adds in particle position, so it does not account for other forces and modules effecting the particles, and will only spin in a circle by default. The user c ...

Visibility animations don't propagate to children

UE - Editor - Content Pipeline - Datasmith - Importer - Oct 16, 2019