NavMesh "Enable Drawing" option is not saved

UE - AI - Mar 7, 2015

USER DESCRIPTION: Every time I check "Enable Drawing" in project settings, save all, close the editor then open it again -> Enable Drawing is unchecked. Why? Is there some other place when this opti ...

ATan is not available in a Math Expression

UE - Gameplay - Blueprint - Mar 10, 2015

Using a Math Expression node, atan will generate an error as an unknown expression. Reproduced in Main Promotable-CL-2471062 [Image Removed] ...

NavMesh generates 90 degrees rotated for custom collisions

UE - AI - Apr 16, 2015

The NavMesh creates breaks at the wrong rotation if the mesh is using collision created from outside of UE4. This is obvious in a lot of the market content with special collision created in maya/3d ...

Packaged Build Crashing When Activating Particle System with Instanced Parameters

UE - Graphics Features - Jun 17, 2016

This crash only seems to be occurring in a packaged game, and it has not been able to be reproduced in a clean project following the steps that the user provided. ...

UnrealFrontend Plus button has an odd size

UE - Platform - Console - UnrealFrontend - Jul 20, 2016

The Plus button on the right side of the Custom Launch Profiles row in UnrealFrontend is stretched vertically. ...

Changing character collision at runtime results in erratic physics behavior

UE - Simulation - Physics - Sep 25, 2015

Using SetCollisionObjectType at runtime to change the collision channel of a character results in different results than expected. Project: [Link Removed] ...

Some textures don't work with particle cutouts

UE - Graphics Features - Jun 2, 2016

Some textures don't work with particle cutouts [Image Removed] ...

[CrashReport] Crash When Enabling OSVR Plugin

UE - Platform - XR - May 11, 2016

The editor is crashing when the OSVR plugin is enabled. Error Message: Unknown exception - code c06d007e (first/second chance not available) Source Context: 465 // Assign the already load ...

Wheels become detached from vehicle if simulate physics is switched.

UE - Simulation - Physics - Oct 19, 2015

If Simulate Physics is turned off / on for a vehicle, the wheels will become detached from the vehicle and keep rolling if they were rolling at the time that Simulate Physics was turned off. ...