Foliage's Landscape Layers are not reflected when Landscape is rotated

UE - LD & Modeling - Terrain - Landscape - Feb 19, 2020

This problem seems to occur because Rotation is not taken into account when calculating Weight. I have confirmed that it can be solved by calculating the rotation as follows.float ULandscapeCompone ...

FloatCurveAsset reference is lost when reopening a Struct

UE - Gameplay - Feb 18, 2020

Structs containing references to instances in the content browser of FloatCurves fail to store these data formats as default values. This was reported and tested in 4.24.2 (CL-11100242). This was r ...

BuildPatchTool crashes on Mac and Linux when building android or ios with multiple chunks

Portal - Feb 18, 2020

"It seems that deallocation of TLazySingleton<FInternationalization> causes unhandled exception. If DISABLE_LAZY_SINGLETON_DESTRUCTION=1 is provided - the build completes successfully" ...

Weighted Tangent not functioning in Curve Asset

UE - Anim - Sequencer - Feb 18, 2020

Weighted Tangent handle modifications do not work as expected in Curve Assets. ...

Draw debug depth priority oddities

UE - Graphics Features - Feb 18, 2020

Came across a few oddities with draw debug. DrawDebugSolidBox ignores the DepthPriority parameter and appears to always draw in World. In the screenshot the sphere is drawn on top of the mesh, the ...

Mac - Unable to drag-drop import with special characters

Tools - Feb 18, 2020

Dragging + Dropping a file with special characters to import on Mac results in Error. "LogFactory: Error: Can't find file 'filepath' for import" Workaround: Click 'Import' in content browser inste ...

Complex collision mesh might lose its collision in the editor

UE - LD & Modeling - Modeling Tools - Mesh Editing - Feb 18, 2020

This is affected by loading order. In the case, display mesh was loaded firstly and try to build collision mesh form complex collision mesh asset. But the collision mesh didn't finished to make Ren ...

Physics Constraint Actor Won't Disable Collision Between Two Actors That Are Already Colliding

UE - Simulation - Physics - Feb 17, 2020

Meshes that are colliding that are set as constraint actors don't follow the Physics Constraint Actors "Disable Collision" parameter if they are colliding prior to being set as constrained actors. ...

Using Collision in Niagara without an Update Age module will prevent any particles from spawning

UE - Niagara - Feb 17, 2020

Using Collision without Update Age will prevent any particles from spawning. In Collision Query and Response DataInstance.Alive has a default value of false. If no other module sets DataInstance.Ali ...

D3D12RHI crash using laptops internal display

UE - Rendering Architecture - RHI - Feb 17, 2020

Running the engine with DX12 enabled on MSI GS75 Stealth 9SF results in a D3D crash when using the internal display on the laptop. *Note: Unable to reproduce the crash. The user receiving the cra ...