Crash Occurs When Mesh is Reimported Multiple Times in the Mesh Editor

Tools - Foliage - Jan 24, 2018

Engine crashes when asset has been reimported multiple times through the mesh editor -Editor crashes in Main when reimporting -Editor crashes in 4.17 when changing the Import Transforms ...

In Pose Pin Does Not Immediately Appear for Sub Anim Instance Node

Anim - Jan 24, 2018

The Sub Anim Instance pin does not appear automatically when the Anim Blueprints are connected in the order listed above. If done in another order the "In Pose" pin appears. ...

Locked actors still moveable in VR Editor

Tools - VRMode - Jan 22, 2018

Actors that are locked in the regular editor are able to be moved in VR Editor. Reproduced in 4.17.2 CL 3658906, 4.18.2 CL 3794801, and 4.19.0 P1 CL 3837072 ...

Collision does not work on Static Mesh created from BSP

Physics - Jan 19, 2018

After applying a Linear Stair brush to the editor and creating a Static Mesh from that brush, then setting its Collision Preset to BlockAll, the third person character is not able to walk up the sta ...

Destructible mesh loses collision and physics after packaging in 4.18.2

Physics - Destruction - Jan 17, 2018

Destructible Meshes are losing collision and physics after a project has been packaged. They will work normally when running PIE. ...

Lighting Build Fails With High Density Foliage

Tools - Foliage - Jan 16, 2018

Trying to build lighting on a map with high density foliage will fail lighting build or cause the editor to crash. This occurs in 4.15, 4.16, 4.17, and 4.18. There have been multiple reports of this ...

The CanLaunchURL() function does not do what it seems to imply that it does

Core - Jan 15, 2018

The CanLaunchURL() function seems like it would check the provided URL to make sure it is valid. The comment for the function in GenericPlatformProcess.h appears to imply that this is what the funct ...

Animation Blueprint Editor Crashes on Compile if the Debug Instance Selection is Other Than No Object or Preview Instance

Anim - Jan 15, 2018

-Crash occurs when debug is set, and anim Blueprint is compiled while actor blueprint is selected -When reopening project, imported assets are no longer there -Reopening project after crash, the opt ...

Get unexpected surface normals result while using TextureBasedMorph

Rendering - Jan 11, 2018

Meshes that animate via vertex deformations using worldposition offset display incorrect surface normals while animating. The reflections of the environment smear as the mesh moves making it look tr ...

When deleting a Struct Variable and undoing it, it removes all rows from related Datatables

Gameplay - Jan 8, 2018

When undoing variables in a Structure it clears the referenced Datatable of all its rows. However deleting and just adding a new variable works fine. Repeated undos have the chance to add back the ...