Widget bindings do not appear to look for other widgets as possible SubObject properties

UE - Editor - UI Systems - Jan 11, 2017

Widget bindings do not appear to look for other widgets as possible SubObject properties. Widget references do not show up as possible SubObject properties ...

Static variable declaration causes unresolved external errors when calling FRootMotionMovementParams functions

OLD - Anim - Jan 11, 2017

Attempting to call a FRootMotionMovementParams function results in an unresolved externals error on compile because of the static FVector RootMotionScale variable. Workaround: In source, removing s ...

Crash when trying to save game to slot after the save game calls an event dispatcher

UE - Gameplay - Blueprint - Jan 11, 2017

When trying to create a save game slot the editor will crash if the save game being used has just called an event dispatcher. ...

IsTickableInEditor is ignored

UE - Foundation - Core - Jan 10, 2017

Changing IsTickableInEditor to false does not prevent an object from ticking while in editor mode. ...

CDO is not properly updated on Hot Reload causing "ghost" code.

UE - Foundation - Cpp Tools - Hot Reload - Jan 10, 2017

When a hot reload is preformed, the CDO is not properly cleared. This causes a copy of the class to be generated with both the original and copy triggering calls. Workaround: Preforming an additio ...

Procedural meshes spawned at runtime cause a crash

UE - Simulation - Physics - Jan 10, 2017

When using a procedural mesh at runtime, projects fail on mobile devices. Tested on both Android Nvidia Shield and iPhone 6+. ...

Landscape Tessellation shadow depth performance cost higher than expected

UE - LD & Modeling - Terrain - Landscape - Aug 23, 2016

Using tessellation on Landscapes causes a greater impact in performance than what is expected. In the screenshots provided there is a comparison between tessellation disabled and flat tessellation ...

GPU Particle Collision causes shaking when set to bounce with low resilience.

UE - Niagara - Jul 27, 2016

A particle emitter with GPU sprites on certain settings will shake violently as they collide with the ground. This requires there to be a strong Const Acceleration module and Collision with low resi ...

Creating a code project named Test will fail the initial compile and every hot reload in Binary

UE - Foundation - Build - Farm - Jul 21, 2016

When a C++ project is named Test on a Binary version of the editor, the project will fail to compile. I'm assuming this is from the editor seeing a precompiled header from another file in the engine ...

Edges flickering when bsp geometry added to the level

UE - LD & Modeling - Modeling Tools - BSP - May 13, 2016

When adding a bsp Geometry object into the world the edges flicker. The effect can sometimes be seen better if you change the tessellation of an object that has it. Observed on border edges of a sel ...