Imported animations don't import correctly when using same import settings as skeletal mesh it's based off

Datasmith - Jul 10, 2019

When importing an animation using the same import settings as the imported skeletal mesh it is meant for part of the mesh is rotated 90 degrees around the root. The files that were used to verify th ...

Actor does not receive End Play if it was destroyed during the world's Begin Play and it had already begun play

Gameplay - Mar 30, 2018

If an Actor destroys another Actor when the game is first starting, then End Play does not get called on the destroyed Actor. In the attached project, there is an Actor Blueprint in the level that s ...

FOV only Camera anim is not working as intended.

Gameplay - Feb 6, 2018

FOV-track-only camera anim do not give effect to current camera. if the anim have transform track without any key, the anim works. Regression? yes. This is not reproduced in 4.13.2 launcher version ...

Optimization Viewmode Quad Overdraw Remains on Screen After Switching to Stationary Light Overlap

Rendering - Jan 29, 2018

The optimization view mode 'Quad Overdraw' image is not properly cleaned up when switching directly to 'Stationary Light Overlap' view mode. See attached images.  ...

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 ...

Translucent Materials and Atmospheric Fog Appear Black or Pink on Mac

Rendering - Jan 3, 2018

I tested this on a Mac Pro in UE 4.15, 4.16, 4.17, and 4.18. As a possible workaround for the fog issue, I've discovered that setting Atmospheric Fog > Lighting > Disable Ground Scatter to "True" wi ...

Shortcut(Function, Add a new function graph) leads to crash in the MacroLibrary editor.

Gameplay - Blueprint Editor - Dec 4, 2017

Shortcut will still led to create a new function in the macro library. and this makes engine crash with following callstack. Assertion failed: Blueprint->BlueprintType != BPTYPE_MacroLibrary [Link ...

Fatal error when pausing and sleeping when using Launch Windows Game

Rendering - Nov 13, 2017

When using the pause command in a launched game and putting the computer to sleep it causes the fatal error "GameThread timed out waiting for RenderThread" when logging back in and resuming work on ...

Draw debug points do not draw at the same sizes in Orthographic viewports as they do in Perspective viewports

Tools - Oct 30, 2017

With the Draw debug points node, the points do not draw at the same sizes in Orthographic viewports as they do in Perspective viewports. This issue does not appear to be a regression. Versions Test ...