Failed assertion on creating a basic chaos geometry collection and PIE

UE - Simulation - Physics - Jan 23, 2020

User encounters a failed assertion when trying to create a simple geometry collection from a box ...

BlueprintGetter does not work with or disable AnimGraph Fast Path

OLD - Anim - Jan 23, 2020

When used as part of the fast path in an ABP, variable Blueprint Getters are not used. If something with a getter that does not conform to or is supported by fast path, is used then fast path should ...

Planar Reflections Cause Big Performance Hit In Packaged VR Projects

UE - Platform - XR - Jan 22, 2020

Planar reflections notably lower performance in packaged VR project. Linked is an example project and an example package. [Link Removed]. This was tested on a Vive Pro and Oculus Rift(not Rift S). ...

Crash hovering mouse over User Defined Struct array variable on Widget Blueprint breakpoint

UE - Gameplay - Blueprint - Jan 22, 2020

Looks a crash caused by an access violation when trying to export text from the property for the tooltip. Seems to be limited to arrays of user defined structs and the Widget Blueprint editor. ...

Materials using the Tessellation mode 'PN Triangles' cause objects to incorrectly render in Wireframe view mode when selected

UE - Rendering Architecture - RHI - Jan 21, 2020

Creating a material that has it's tessellation mode set to "PN Triangles" and assigning it to an object results in the objects geometry to not properly display in Wireframe view mode.  Tested i ...

Alembic Hair Groom Asset + DoF = artifacts around edges

UE - Graphics Features - 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 ...

Add material API to python

UE - LD & Modeling - Modeling Tools - Mesh Editing - 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. ...

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

OLD - 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

UE - Anim - 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 ...