Users custom AI-heavy project crashes if anything is Built

UE - Gameplay - Feb 2, 2015

Users custom AI project crashes if anything is Built. (All, Lighting, Geometry, etc.) The project can be played but receives a message during play that the Navmesh needs to be rebuilt. ...

Procedural Sound Wave Fails to Play when returning 0 bytes in GeneratePCMData callback

UE - Audio - Aug 2, 2016

Returning 0 bytes in GeneratePCMData results in the procedural sound wave not continuing to play audio. Instead of returning 0, we need to return an empty buffer if the procedural sound wave doesn't ...

Windows Package for Linux fails missing CrashReportClient-Linux-Shipping.target receipt

UE - Foundation - Build - Rocket (Installed Engine) - Aug 4, 2016

Packaging a Blueprint project from Windows Binary for Linux fails with the following error: UATHelper: Packaging (Linux): Program.Main: ERROR: AutomationTool terminated with exception: AutomationTo ...

Text/value is not highlighted when selecting slider fields in details

UE - Editor - UI Systems - Slate - Apr 22, 2016

Text/value is not highlighted when selecting slider fields in details This is extremely irritating in cascade and basically breaks usability. Does not occur in 4.11 Tags: Scrub Scrubbing value t ...

Lengthy Compile Times on Blueprints Containing an Array of Self References When Multiple Instances Exist in the Level

UE - Gameplay - Blueprint - Oct 11, 2016

There are lengthy compile times with a blueprint with 50+ instances in the level that contains an array of self references. On lower-end machines, the compile times are upwards of 10 seconds. Found ...

Huge game window when launching onto Safari 9.1.2

UE - Platform - Mobile - Aug 31, 2016

The game window in the Safari browser expands to a huge size along the Y axis. We do not see this issue on Safari version 10. The game window expands for about 5 minutes before the game is playab ...

UMG text does not update text when loading save game in real time

UE - Editor - UI Systems - Localization - Nov 25, 2015

If a project is utilizing load/save game features and attempts to print that load/save game's text information to a text box in UMG, the text box will not update in real time. ...

Static Bool Parameters not Visible on Material Instances by Default when passed through a Quality Switch Node

UE - Graphics Features - May 4, 2016

When feeding a 'Static Bool Parameter' through a 'Quality Switch' node within the material editor, the material instance for said parameter does not appear until the 'Params' button is enabled. If ...

Physics Constraint angular visualization are missing in 4.11

UE - Simulation - Physics - Apr 14, 2016

Physics Constraint angular visualization are missing in 4.11 This is a regression User Description: Since 4.11 angular constraints of the physics constant are not shown in the viewport. In 4.10 ...

Max Angular Velocity Value Being Reset

UE - Gameplay - Jun 6, 2016

The value of Max Angular Velocity on a component is being reset after changing the value and compiling the blueprint. Found in 4.12 binary, reproduced in Main CL 2994701. Could not reproduce in 4. ...