AISystem::RegisterBlackboardComponent being called not in all valid cases

UE - AI - Feb 6, 2015

Observed by 4.7 preview 5 user. After closed investigation it turned out he had two consequent AIController::UseBlackboard calls, which triggered a ensure failure in AISystem::UnregisterBlackboardCo ...

Some landscape grass instances floating when generated on AMD cards under OpenGL

UE - Graphics Features - May 15, 2015

User is reporting grass at the edge of their landscape being generated floating in the air on a Mac Pro with AMD GPUs. I have been unable to repro this on my Mac Mini with Intel Graphics HD 4000. Q ...

Erractic Light Component Behavior in Blueprints

UE - Gameplay - Blueprint - May 11, 2015

You cannot PIE if you attempt to adjust the Intensity of a Light via the slider in a BP that is placed in the Level already. In addition the color slider does not stay open when editing values for ...

Draw HUD shows in the wrong location on Android

UE - Platform - XR - Aug 3, 2016

Event Receive Draw HUD renders in the wrong location when using GearVR. In the PIE the location is correct, but not when rendered on the device. See images for better context. This is a regressio ...

Masked Materials have become more expensive to use

UE - Graphics Features - Aug 18, 2016

Masked Materials have become more expensive in 4.13 and internal builds than in 4.12. Images attached for demonstration along with test map using the bush prop from starter content. Tested with ...

Macro Libraries do not update after rename

UE - Gameplay - Blueprint - Jan 21, 2015

Macro Libraries can only be called by their original name, even after being renamed to something different. ...

"Fix root motion initial rotation handling" commit breaks root motion completely

OLD - Anim - Dec 18, 2014

Enabling and processing root motion causes animation to rotate the wrong direction. Roll instead of Yaw. Pitch instead of roll etc. This error does not occur in UE 4.6. ...

The size of packaged projects in 4.7 preview 8 is almost double that of the same project in 4.6.1

UE - Gameplay - Feb 17, 2015

Packaged projects in 4.7 preview 8 are significantly larger than the same projects in 4.6. Packaged projects for comparison: \\epicgames.net\root\contractors\Tim.Lincoln\Packaged Projects ...

Shipping builds do not execute .exe

After playing with it and attaching in the debugger, it's sitting forever in MigratePreviousEngineIni(). It seems to be looping on DirectoryExists forever, likely here: while(PreviousVersion.GetMi ...

Combo box does not function in packaged build

UE - Editor - UI Systems - May 10, 2017

The ComboBox (string) element for UMG is not correctly displaying, The array options do not appear and can not be selected, for the packaged build, while PIE behaves as expected. Regression: This ...