User created OSS plugins require modifying Engine now

UE - Online - Aug 24, 2018

This was discovered in live build and posted in UE Forums that based on changes to OSS, users (binary specifically) can no longer create their own OSS plugins as it requires modifying the Engine Sou ...

PIE gets stuck on infinite loop when Background Streaming is disabled

UE - Foundation - Core - Aug 24, 2018

When "Use Background Level Streaming" is disabled, the Editor gets stuck loading in PIE when you press Play. This is a regression from 4.19.2 (CL-4033788). This issue was reported and tested in 4.2 ...

Audio Attenuation falloff is applied even when turned off when called in Blueprints

UE - Audio - Aug 24, 2018

The Sound Attentuation is not ignored when disabled as audio played from a Blueprint. Tested in 4.19.2 (CL - 4033788), 4.20.2 (CL - 4302132), 4.21 (CL - 4313833) ...

Keep World option for Attach / Detach to / from Component does not replicate properly to clients

UE - Networking - Aug 23, 2018

Using Attach To Component and Detach From Component with the Keep World option for the Location/Rotation/Scale rules does not replicate properly to clients. This does work when using AttachToActor a ...

Android Volume Up/Down input events no longer functioning

UE - Platform - Mobile - Aug 23, 2018

Android Volume input events have stopped triggering in 4.20 Tested on Pixel XL (8.0) Also occurring in Main at CL 4309299 ...

Preview Mesh for Skeleton/Animation can't be saved correctly

OLD - Anim - Aug 23, 2018

It seems that preview meshes of Skeleton/Animation can't be saved correctly. I had changed a preview mesh and had saved it, but after reopening the project, the setting was ignored and the preview ...

Update Instance Transform Rotation for HISM isn't working in a packaged game

UE - World Creation - Worldbuilding Tools - Foliage - Aug 22, 2018

Using 'Update Instance Transform' to rotate HISM instances will work in PIE, but won't work in a packaged game. This is a regression from 4.19.2 (CL-4033788). This issue was reported and tested in ...

Solidworks 2018 Virtual Parts aren't imported

UE - Editor - Content Pipeline - Datasmith - Importer - Aug 22, 2018

When importing a Solidworks 2018 CAD assembly, if the part in the assembly is a virtual part (denoted by brackets in the feature tree), a part that exists only within the assembly, the part and rela ...

Creating SplineMeshComponents along Spline causes crash

Tools - Aug 22, 2018

Attempting to procedurally create SplineMeshComponents along the spline of a SplineComponent via a derived SplineComponent class's constructor causes the project to crash. It runs into an ensure mes ...

Niagara GPU Mesh Particles Not Working In Packaged Project

UE - Niagara - Aug 22, 2018

GPU Mesh emitters will not show up in a packaged project. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 ...