Float Particle Parameter for Point Gravity Strength Raw does not work

Rendering - Aug 24, 2016

The Distribution Float Particle Parameter setting for Point Gravity Source "Strength Raw" doesn't accept values being passed into it from Blueprint. ...

Movable Skylight with DFAO creates Dark Areas when Combined with Reflective Material

Rendering - Jun 9, 2016

A user on the AnswerHub pointed out that his reflections when using a Movable Skylight with Distance Field Ambient Occlusion produces black results when combined with a reflective material. I trace ...

Landscape Creates Two Shadows with Baked Static/Stationary Lighting

Tools - Landscape - May 25, 2016

It appears two shadows are created when building static lighting for Landscapes. One seems to be offset while the other is accurate to the angle of the light source. I tested this in 4.9.2, 4.10.4, ...

Light as If Static setting does not Persist when Re-opening Project

Tools - Apr 28, 2016

This bug was originally entered back in 4.8 as UE-18823, but was closed as by design. The reason was, the mesh did not have Lightmap UVs, so using the 'Light as If Static' option would not work. I ...

Moving the Material Node for Starter Content Materials within the Editor Graph will increase the Texture Sample Count

Rendering - Apr 27, 2016

The issue occurs when you simply move the material node itself and click the 'Apply' button to begin compiling shaders. Once it has completed, the number of texture samples increases for the Stats a ...

PCLaunch.rc.res is not not re-created during the build with -useprecompiled

DevTools - UnrealBuildTool - Apr 15, 2016

A linker error is thrown when trying to build a project with -precompile / -useprecompile flags. Linker Error thrown: LINK : fatal error LNK1181: cannot open input file 'D:\UE4\Engine\Intermediate ...

Premature prompt with failed import when Importing LOD Level for Skeletal Mesh

Tools - Import - Apr 7, 2016

When importing a LOD Level for Skeletal Meshes, the user is greeted with a windows directory window and a message that states "Failed to import mesh for LOD level 1" As the user states, this is a s ...

Local Position Material Function failing to compile when Packaging for HTML5

Platform - Mobile - Mar 25, 2016

After some extensive testing, I could not find any reason why the material function LocalPosition node was failing to compile and defaulting to the world grid material when Packaging for HTML5. I a ...

Unable to Open Level in HTML5

Platform - Mobile - Mar 16, 2016

Trying to use an Open Level function in HTML5 does not allow the level to actually load. Instead, the project flashes and refreshes back to its original position. Open Level function does work on W ...

TUnion copy constructor causes the editor to assert due to Unrecognized TUnion subtype

Core - Mar 15, 2016

The TUnion copy constructor causes the editor to toss an assert due to it claiming that the passed in TUnion is of an Unrecognized TUnion subtype. ...