Building Lighting fails when lightmass importance volume scale is large

Rendering - Jan 30, 2018

There is an issue when attempting to build lighting with a large lightmass importance volume when you build the lighting the editor freezes. This issue appears to be a regression Versions tested: 4 ...

[Metal-Epic:iOS] Directional Light graphics corruption when using the Metal Desktop Forward Renderer on iOS

Rendering - Jan 25, 2018

When enabling the Metal Desktop Forward Renderer on iOS, Directional Light's with Light Shaft Bloom enabled will cause full screen graphics corruption when looking at the light source. ...

[CrashReport] - TRawMessageHandler<FTargetDeviceServicePong,FTargetDeviceProxyManager>::HandleMessage()

Platform - Mobile - Jan 25, 2018

User comments:Packaging Android Crash with similar callstack fixed in 4.16: UE-44154 I verified that the repro steps in that bug do not cause a crash in 4.18.3 Similar crash on Mac: UE-50846 ...

Draw Debug String appears to render in the wrong location

Tools - Jan 23, 2018

Draw Debug String appears to render in the wrong location when changing the scaling for a monitor containing the editor. ...

Lighting Build Fails With High Density Foliage

Tools - Foliage - Jan 16, 2018

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

Get unexpected surface normals result while using TextureBasedMorph

Rendering - Jan 11, 2018

Meshes that animate via vertex deformations using worldposition offset display incorrect surface normals while animating. The reflections of the environment smear as the mesh moves making it look tr ...

Foliage does not appear in capture target when using "Always Persist Rendering State" when the foliage count is over 1.5k

Tools - Foliage - Jan 10, 2018

There is an issue occurring where Foliage does not appear in capture target when using "Always Persist Rendering State" when the foliage count is over 1.5k. The issue does not occur when the foliage ...

Eyedropper in the Color Picker window does not grab any color values on Mac/Linux

Tools - Jan 5, 2018

Trying to use the eyedropper in the color picker window on Mac fails to grab any color values. The colors will only update when hovering or clicking within the viewport but the colors shown aren't c ...

Crash exiting play in vr preview with -Vulkan and Oculus Rift

Virtual Reality - Dec 22, 2017

Editor crashes after exiting a play in vr session with -Vulkan enabled Exclusive to Oculus Rift ...