Unreal Engine Issues

ATan is not available in a Math Expression

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

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

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. ...

Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white

When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white. ...

Lighting channels are not supported with tiled lighting

Reported via UDN ...

UnrealFrontend Plus button has an odd size

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

WmfMedia: Cannot load media with multiple tracks of the same type

The currently implementation of WmfMedia player initialization is incorrect in that it creates a playback topology that includes all source tracks, but some of them are disabled. The intent was to e ...

Devices reporting OpenGL ES 3.2 such as Galaxy Note 7 detect as ES2-only

Changing character collision at runtime results in erratic physics behavior

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

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