Cannot run a packaged project if the project uses a Built-In Editor plugin and the project was packaged with the Build setting set to "Never"

Core - May 24, 2018

This may be related to UE-27171. A packaged project will fail to run successfully if the project includes a Built-In Editor plugin and the project was packaged with the Build option set to "Never". ...

Enabling Preview Rendering Level Mobile GLES3.1 on Map With Vector Fields Results in Editor Crash

Platform - Mobile - May 21, 2018

Reproduced Crash on 4.18.3, 4.19.2, and Main CL 4081612. Licensee states: Based on a quick inspection of the code, it seems FVectorFieldVisualizationVertexFactory::ShouldCache() returns false (req ...

Cannot edit properties for a component inherited from a code class if the component's default subobject was created using a string that matches the variable name of a component in a parent code class

Gameplay - May 18, 2018

It is not possible to edit the properties in the Details panel inside the Blueprint editor for a component inherited from the parent code class, if the default subobject for that component was creat ...

Running the demostop command within GameMode :: OnLogout crashes the process

Networking - Replay - May 18, 2018

amendment void APlayerController::OnNetCleanup(UNetConnection* Connection) { UWorld* World = GetWorld(); // destroy the PC that was waiting for a swap, if it exists if (World != NULL) ...

Previewing Node in Material Editor Produces Unexpected Output with DX12

Rendering - May 16, 2018

Per Licensee: Since we switched to DX12 we started to see strange behavior in material previews. I was able to reproduce the problem in UE 4.19 vanilla as well. We usually have to force recompilin ...

Crash in editor after disabling AISystem in Worldsettings

Gameplay - AI - May 16, 2018

After disabling the World Option bEnableAISystem, clicking with the right mouse button on the asset browers (in an empty place) casues the editor to crash. ...

Navmesh generation doesn't work with Retopologize tool

Gameplay - AI - May 15, 2018

When a Landscape is edited with the Retopologize tool, Dynamic Navmesh is no longer generated. This was also tested with Static Navmesh and yielded the same results. ...

Volumetric Lightmaps Do Not Sample Correctly Under Landscapes

Rendering - May 11, 2018

Per Licensee:  I noticed that the Volumetric Lightmap does not build at correct density if an object is under the level of the terrain. Is this a feature or a bug? I'm creating a under-terrain dung ...

Child Snaps Away from Parent When Attach Track is Used

Tools - Sequencer - May 11, 2018

When attach track is added to a parent mesh in sequencer the the child mesh changes location ...

Forward Rendering Stationary Light Artifact

Rendering - May 11, 2018

The user who reported the issue has provided a video that also shows the issue:  [Link Removed] ...