Alembic Hair Groom Asset + DoF = artifacts around edges

Rendering - Features Teams - Jan 21, 2020

Hair assets show artifacting between strands when used with DoF. Confirmed in MAIN 4.25 @ CL 110623791 ...

Mac - Media Player - Web Cam not accessible

Media Framework - Jan 20, 2020

Audio/Video Devices are no longer accessible via Media Player on Mac. User info: "We think it is connected to camera and microphone privacy. We have got a crash trying to access to camera from cust ...

Renaming a component in a parent blueprint can lead to data loss in its unloaded child blueprint.

Gameplay - Blueprint - Jan 20, 2020

A child blueprint won't be marked dirty if it hasn't been loaded and you rename a component on its parent blueprint. This can lead to a situation where the editor can be closed without prompting the ...

Add material API to python

Tools - MeshEditing - Jan 20, 2020

UDN ask to control mesh materials in python script. The API is public but not expose. I suggest to add functionalities to the editor scripting utilities plugin for both static and skeletal meshes. ...

SSGI doesn't function properly using Vulkan

Rendering - RHI - Jan 20, 2020

Screen Space Global Illumination appears really dark when using the Vulkan RHI on Windows and Linux. This behavior is also present in a Shipping build. This was reported and tested on 4.24.1 (CL-1 ...

Default lux setting for ArchVis template causing render issue for 3d Widget blueprints and Materials set as "Unlit"

Rendering - Features Teams - Jan 20, 2020

The ArchVis template's default lux setting for the scenes directional light causes improper rendering on newly created materials and 3D widgets set to Unlit.  Project attached with material made, s ...

AR Core - Apps with Candidate image result in black screen on first launch

XR - Jan 20, 2020

On first launch of an AR app with Android the camera passthrough will render black. This also happens if an app is minimized and re-opened. This will not repro if there is no candidate image assign ...

Linked Anim Graph With Mesh With Post Process BP Has Faster Animation Playrate

Anim - Jan 20, 2020

When an animation blueprint is using the "Linked Anim Graph" node and it's skeletal mesh has a post process animation blueprint the animation is played at the wrong playrate. Linked Anim Graphs wer ...

StopAtCurrentTime Node Sets Playback Position To 0.f In Level Sequence Actors

Tools - Sequencer - Jan 20, 2020

Level Sequence actors have their current playback time to 0.f when using the StopAtCurrentTimeNode. In MovieSceneSequencePlayer.cpp line 288 TimeToResetTo is set to 0.f. Attached is a 4.24 example ...

Vehicle Game sound bug when driving over sand.

Docs - Samples - Jan 20, 2020

Sound cue is looping when stopped on top of the landscape. ...