To activate cascade particle first time on sequencer is not work in a specific way.

Tools - Sequencer - Jan 6, 2020

The bIsActive flag on ParticleComponent is stored in a sequencer asset. If it's true, PartilceSystemComponent::ActivateSystem is skipped at FParticleTrackExecutionToken::Execute. In workaround, Set ...

'Skip Assigning Gamepad to Player 1' routes MotionController input to non-vr player

Gameplay - Input - Jan 4, 2020

Motion controller inputs get routed to non-vr player when 'Skip Assigning Gamepad to Player 1' is enabled. ...

Apex Destruction - Destructible Mesh disappears after Fracture

Physics - Destruction - Jan 3, 2020

Fracturing a mesh with Apex Destruction in 4.24.1 (CL-10757647) causes the mesh to disappear after clicking Fracture. This behavior was not present in 4.23.1 (CL-9631420). Unable to confirm this in ...

GitHub 6511 : [#] Fixed Engine compilation for Android platform: added required '#i?

Platform - Mobile - Jan 3, 2020

See https://github.com/EpicGames/UnrealEngine/pull/6511 (shelved in CL 10874592) ?nclude <errno.h>' Modified Files: //UE4/Release-4.24/Engine/Source/Runtime/TraceLog/Private/Trace/Detail/Andr ...

GitHub 6510 : [#] Fixed Android NDK version handling

Platform - Mobile - Jan 3, 2020

See https://github.com/EpicGames/UnrealEngine/pull/6510 (shelved in CL 10874589) Modified Files: //UE4/Release-4.24/Engine/Source/Programs/UnrealBuildTool/Platform/Android/AndroidToolChain.cs ...

Niagara Systems Don't Scale With Skeletal Meshes When Called From a Montage

Rendering - Niagara - Jan 2, 2020

When a Niagara System is called from a montage is doesn't scale with the skeletal mesh that uses the montage. Attached is an example project. Found in 4.24.1 CL#1077647 Reproduced in 4.23.1 CL# 9 ...

Custom Launch Profiles lose selected projects after first re-open of the editor

Tools - Jan 2, 2020

Selected project resets in a custom project launcher profile only after the first time restarting the editor.  Tested: 4.24.1 CL#10757647 4.25 CL#10873002 ...

Unable to launch version 4.24.1 after fresh installation. Assertionfailed IsValid()

Tools - Dec 31, 2019

User is receiving a crash after a brand new installation of version 4.24.1 NOTE: User is able to launch 4.20 - 4.23.1 without issue. "I tried reinstalling the editor build, updating all of my dr ...

"Scene Capture Component 2D" Causes Big Performance Dip In VR

XR - Dec 31, 2019

When a "Scene Capture Component 2D" is in a scene it causes a big performance dip in VR. It was ~45 fps from a ~90 fps with the "Scene Capture Component 2D". This doesn't occur if you are running th ...

The vertex color view mode in the vertex painting editor mode ceases to work when the project setting "Extend default luminance range in auto exposure settings" is enabled.

Rendering - Dec 31, 2019

When "Extend default luminance range in auto exposure settings" is enabled, the Color View Mode in the vertex painting editor mode ceases to work and without any warning to the user. ...