Opening or Creating a Material with SubSurface Profile will Crash Editor with LPV enabled

UE - Graphics Features - Dec 22, 2014

After enabling Light Propagation Volumes with the console variable r.LightPropogationVolume=1, opening or creating a material with the subsurface profile model will crash the editor. Broken in 4.6. ...

LIVE: Memory spikes when importing a json with a large amount of sprites

UE - Gameplay - Paper2D - Oct 24, 2014

While importing a json file with a large amount of sprites, memory usage spikes. The test asset uses a 2000x128 texture with 1024 elements. ...

Void Interface functions cannot be overridden in Blueprints

UE - Gameplay - Blueprint - Feb 10, 2015

A Blueprint Interface function that does not have an Output cannot be overridden in a Blueprint implementing that function. The function does not appear in the Interface section of the My Blueprint ...

Linker errors when deriving from ADecalActor in game

UE - Gameplay - May 6, 2015

Cannot derive from ADecalActor in your game modules as not all of the functions are exposed and you get linker errors. ...

Bloom/Specular difference with same content between 4.8 and 4.9

UE - Graphics Features - Dec 4, 2015

A licensee reported a visual difference, possibly related to bloom or specular when updating from 4.8 to 4.9[Image Removed] After looking at it with Visualize HDR on, Martin commented the following ...

World Composition origin shifting does not account for shifting the Dynamic Directional Light shadow casting

UE - World Creation - Worldbuilding Tools - World Composition - Aug 9, 2016

Directional light does not cast dynamic shadows after origin rebasing using world composition. There is an attached project that reproduces this. To see that the shadows load primarily where the l ...

Unable to import GrayScale Textures

UE - Editor - Content Pipeline - Import and Export - Nov 7, 2014

Reported by Twitter user, "Does #UE4 seriously not support importing greyscale textures anymore?" ...

Display 1.2 bouncing ball has a typo in the Math Hall of ContentExamples

Docs - Samples - Sep 19, 2016

Just a typo that needs to be fixed. ...

iOS will not package or launch on Win 10 machine

UE - Platform - Mobile - Sep 23, 2015

Launching or packaging for iOS does not work on our Windows 10 machine however we are able to package and launch onto iOS devices from Windows 7 machines. Using the File > Package > iOS option with ...

Post Process Effect Screen Percentage Not Functioning

UE - Graphics Features - Mar 18, 2015

The Post Process setting "Screen Percentage" does not seem to work at all. After looking at the example provided in the documentation highlighting the Content Examples map with this feature, I was ...