Blueprint Launches onto tvOS fail during runstep: Error_DeviceOSNewerThanSDK

Platform - Mobile - Apr 19, 2019

When a user launches blueprint project to a tvOS device they will fail to run the project during the run step and if they manually try to launch the app from the dashboard. This issue does not repr ...

Packaged content hangs when relaunching on Oculus Mobile device after Closing the application

Audio - Apr 9, 2019

This does not occur with some previously packaged First Person templates that were on the device still namely one from //UE4/Dev-VR 4.21.0 @CL 4277723  It also does not occur with other apps on the ...

Disabling DBuffer Decals causes Decals not to render

Rendering - Mar 8, 2019

Disabling the Decal DBuffer in the  Project Settings>Rendering causes the Decals to not render on geometry that overlap their respective Decal Actor. Tested in 4.21.2 (CL - 4753647), 4.22 (CL - 5 ...

Changing class of Sub Anim Instance will crash if tag is specified

Anim - Animation - Mar 1, 2019

Switching sub anim instances that have a set tag will crash the editor when compiled. This is likely due to the use of Tag as the object name. The tag does not change, and the old UObject is still a ...

Confusing build error message provided when semi-colon is not added after a forward declaration in an Interface header file

Core - UnrealHeaderTool - Feb 15, 2019

If a forward declaration of a class is made in the header file for an Interface class, and no semi-colon is included at the end of the forward declaration line, the build will fail with a confusing ...

Merging negative-scaled actors breaks materials

Tools - HLOD - Mar 27, 2018

Materials are broken when merging a mesh with another that has negative scale Licencee states that bisMirrored in FMeshMergeHelpers::TransformRawMeshVertexData seems to be involved. Does not occur ...

Successive Play in VR sessions are causing Editor hangs on Oculus when "Run Dedicated Server" is enabled

XR - Dec 13, 2017

when playing in VR Preview with Run Dedicated Server enabled, successive PiVR sessions are causing extreme editor hangs, up to ~30 seconds This appears to be exclusive to VR ...

Destructible attached with a Physics Constraint have inconsistent physics

Physics - Destruction - Jul 26, 2016

Destructible attached with a Physics Constraint have inconsistent physics compared to a standard Static Mesh. This is also sometimes prevalent with Destructibles that aren't attached with a Physics ...

Get Location at Distance Along Spline returns inaccurate information

Tools - Mar 7, 2016

Get Location at Distance Along Spline returns inaccurate information. The distances between locations seems to change without pattern along the spline path between two spline points if the spline po ...